finfin /fɪn/ ●○○ noun [countable] 
one of the thin body parts that a fish uses to swim2part of a plane that sticks up at the back and helps it to fly smoothly3 (also tail fin) a thin piece of metal that sticks out from a car or bomb at the back4a flipper
WORD ORIGINfin
Origin:
Old English finnEXAMPLES FROM THE CORPUS
- Almost all the major fins possess spines and venom glands.
- Cars are fatter and fewer, and imitate animals with their fins and wings.
- Picture a shallow pool with a glassy surface, and in the pool picture minnows fluttering their tail fins but otherwise stationary.
- The caudal fin is yellow-brown, and the dorsal spine and long snout are orange.
- This is a deep blue fish with red shading on his fins.
- When stocking a pool with fish, take care to select healthy individuals with firm, meaty bodies and erect dorsal fins.
WORD SETS
aerial, adjectiveaero-, prefixaerobatics, nounaerodrome, nounaeronautics, nounairborne, adjectiveaircraft, nounaircrew, nounairfare, nounairfield, nounairline, nounairliner, nounair pocket, nounairport, nounairship, nounairsick, adjectiveairspace, nounairspeed, nounairstrip, nounair terminal, nounair traffic controller, nounairway, nounairworthy, adjectivealtimeter, nounapron, nounautomatic pilot, nounautopilot, nounaviation, nounaviator, nounballast, nounballoon, nounballooning, nounbank, verbbarrage balloon, nounbiplane, nounblack box, nounblimp, nounboarding card, nounboarding pass, nounbulkhead, nounbusiness class, nounbuzz, verbcabin, nouncaptain, nouncarousel, nounceiling, nouncharter flight, nouncheck-in, nounchock, nounchopper, nounchute, nounclub class, nouncontrail, nouncontrol tower, nounco-pilot, nouncowling, nouncraft, nouncrash landing, noundeparture lounge, noundepartures board, noundirigible, noundisembark, verbdive, verbeconomy class, nouneject, verbejector seat, nounfin, nounflap, nounflier, nounflight, nounflight attendant, nounflight deck, nounflight path, nounflight recorder, nounflight simulator, nounfly, verbflyby, nounflyer, nounflying, nounflypast, nounfree fall, nounfuselage, noungate, nounglider, noungliding, noungondola, nounground, verbground control, nounground crew, nounground staff, nounhangar, nounhang-glider, nounhang-gliding, nounhelicopter, nounhelicopter pad, nounheliport, nounhijacking, nounholding pattern, nounhot-air balloon, nounhydroplane, nouninbound, adjectivein-flight, adjectiveinstrument panel, nounjet, nounjet engine, nounjet-propelled, adjectivejet propulsion, nounjoystick, nounjumbo jet, nounjump jet, nounland, verblanding gear, nounlanding strip, nounlayover, nounlift, nounlight aircraft, nounlounge, nounlow-flying, adjectivemicrolight, nounmonoplane, nounnavigation, nounno-fly zone, nounnose, nounnosedive, nounnosedive, verboverfly, verbparachute, nounparachute, verbparachutist, nounpilot, nounpilot, verbpitch, nounpitch, verbplane, nounplot, verbpod, nounpressurized, adjectiveprop, nounpropeller, nounradio beacon, nounrefuel, verbripcord, nounroll, verbroll, nounrotor, nounrudder, nounrunway, nounseaplane, nounseat belt, nounshort-haul, adjectiveski plane, nounskycap, nounsonic boom, nounspoiler, nounsteward, nounstewardess, nounstrut, nounswept-back, adjectiveswoop, verbtail, nountailspin, nountake-off, nountaxi, verbterminal, nountest pilot, nounthrust, nountouchdown, nountransit lounge, nountransport plane, nounturbojet, nounturboprop, nountwin-engined, adjectiveundercarriage, nounupgrade, verbvapour trail, nounwheel, verbwindsock, nounwind tunnel, nounwing, nounwingspan, nounwingtip, nounzeppelin, noun
COLLOCATIONS FROM OTHER ENTRIES
a shark’s dorsal finCOLLOCATIONS FROM THE CORPUSADJECTIVE
1 a shark’s dorsal fin· The tail, or caudal fin, is large and sickle-shaped, to give short, rapid bursts of speed.· In addition, it has some yellow on the soft dorsal and caudal fins.· These are powerfully developed and, with the caudal fin, achieve a swift forward thrust.· The caudal fin is yellow-brown, and the dorsal spine and long snout are orange.· It is a uniform bright yellow and has a large lyre-shaped caudal fin.
· The trigger, which gives the fish its name, is the leading ray of its dorsal fin which has become bony.· There is nothing clown-like at all about a pale pink fish with a light stripe along the base of the dorsal fin.· The dorsal fin is like a yacht sail; tall and similarly shaped.· In its dorsal and pectoral fins this fish has spines equipped with venom glands.· New fibreglass wing tips and dorsal fin additions were attached.· In addition, it has some yellow on the soft dorsal and caudal fins.· This is the mark in the water caused by the fish's dorsal fin.· Soon, however, many are projecting their dorsal fins high out of the water and are confidently pecking at their food.
· Although flying fish leap out of the water they do not porpoise but glide, using their pectoral fins as aerodynamic surfaces.· When excited or scared, a white streak appears on the sides, extending backwards from the pectoral fins.· It sustains its leap with high-speed flapping of its oversized pectoral fins for distances of up to 100 metres.· In its dorsal and pectoral fins this fish has spines equipped with venom glands.· Their pectoral fins have been turned to yet more purposes.· The two spines are the first rays of each pectoral fin.· The caudal, dorsal and pectoral fins are marked with darker stripes.· The prehensile pectoral fins actually grasp the weed as the fish moves about.
· She uses twitching and flicking movements of her sooty-black pelvic fins to communicate with the fry.· They are also characterized by their pelvic fins, which are jugular in position and have two to four rays.· The pectoral and pelvic fins and the dorsal along the crest of the back play no part in propulsion.· The swordfish does not have pelvic fins.· During mating the female holds her pelvic fins together to form a pouch into which the eggs are laid.
· The shape of the elongated spiky dorsal fin is reflected in the sweep of the flowing ventral fins.· They frequently can be seen perched on a rock and propped up on their ventral fins as if surveying their little world.· The male is a little larger than the female and has very bright orange ventral fins when in breeding colouration.· Its ventral fins are enlarged and flattened to form suckers on the underside of the body.· Note the downturned wingtips and large ventral fin.
NOUN· He uses his enlarged tail fin to regularly splash them with water, until they hatch about two days later.· Luxurystarved veterans tapped wartime savings to buy record numbers of wraparound windshields and tail fins.· It has no tail fin like those of other fish, merely a fleshy stump.· Picture a shallow pool with a glassy surface, and in the pool picture minnows fluttering their tail fins but otherwise stationary.· Males are slimmer than females, with a more deeply forked tail fin.· It is a conveyance of dreams: chrome, tail fins, pale blue bodywork.
one of the thin body parts that a fish uses to swim2part of a plane that sticks up at the back and helps it to fly smoothly3 (also tail fin) a thin piece of metal that sticks out from a car or bomb at the back4a flipper