释义 |
blade I. \ˈblād\ noun (-s) Etymology: Middle English, from Old English blæd; akin to Old High German blat leaf, Old Norse blath, Latin folium, Greek phyllon leaf, Old English blōwan to blossom — more at blow 1. a. : a leaf of a plant; especially : a leaf of an herb or more narrowly of a grass < blades of stunted grass > b. chiefly Scotland : a leaf that is broad and flat < a blade of rhubarb > c. (1) : the expanded portion of a leaf or a plant organ resembling a leaf : lamina 2b(1) — distinguished from petiole (2) : the broad terminal part of certain petals — distinguished from claw 2. : an object or part of an object resembling the blade of a leaf especially in broadness and flatness: as a. : the broad flattened part of an oar or paddle that exerts force against the water to propel a boat b. : something with an action basically similar to that of the blade of an oar: as (1) : a fluke of a whale (2) : a float of a paddle wheel (3) : an arm of a screw propeller, centrifugal fan, or steam turbine (4) : an airfoil used as a propeller to produce thrust or as a part of the lift-producing system of a rotary-wing aircraft c. : a broad flat bone (as one of the rami of a mandible); specifically : scapula — now used chiefly in naming cuts of meat < a blade chop > — see beef illustration d. : a piece of mace e. : the part of the arm of an anchor behind the palm f. : the expanded rear portion of the comb of a single-comb fowl — see cock illustration g. : the striking surface of a golf club or a hockey stick h. phonetics (1) : the portion of the tongue immediately behind the tip and lying approximately opposite the teethridge when the tongue is at rest (2) : this portion of the tongue together with the tip i. : the light-obstructing portion of the shutter of a camera j. : an inclined metal slab that functions as an ink reservoir in the fountain mechanism of a printing press k. : the broad, flat, or concave part of a road grader, bulldozer, or snowplow that comes into direct contact with the material to be moved 3. : an object or part of an object resembling a blade of grass: as a. : the cutting part of an instrument < the blade of a sword > < well-set saw blades > b. : an edged instrument: as (1) : sword (2) : a stone tool similar to a knife and having one or more sharp cutting edges c. : the runner of an ice skate d. : the long arm of a T square or carpenter's square e. : a single plate of baleen from a right whale f. : one of the movable conducting bars of an electrical switch g. : a slat especially in a venetian blind, louver, or shutter 4. : a human being: a. : swordsman b. : a sharp-witted, dashing, wild, or reckless fellow < such a gay blade of a fellow > c. : woman < the old blade shouldn't last much longer > 5. : one of the principal rafters of a roof II. verb (-ed/-ing/-s) Etymology: Middle English bladen, from blade, n. transitive verb 1. : to furnish with a blade 2. chiefly Scotland : to pluck leaves from (a plant) < blading cabbages for market > 3. : to remove (as gravel or dirt) with machinery having a blade (as a grader or bulldozer) intransitive verb 1. : to leaf out : put forth leaves 2. : to remove typically gravel, dirt, or muck with machinery having a blade III. adjective Etymology: blade (I) of speech sounds : articulated with or involving the participation of the blade of the tongue < \s\ and \z\ are blade consonants > IV. intransitive verb (-s) : to skate on in-line skates • blad·er \-ər\ noun |