one of the four planets in our solar system that are composed chiefly of hydrogen and helium , namely Jupiter , Saturn , Uranus , and Neptune

a giant star towards the end of its life, with a relatively low temperature of 2000–4000 K , that emits red light

an exceptionally large cell, often possessing several nuclei , such as an osteoclast

any of several huge clams of the family Tridacnidae, inhabiting the shallow waters of coral reefs in the tropical Indo-Pacific , as Tridacna gigas : some may weigh more than 500 lb. (225 kg)

a large, deep-water Japanese spider crab , Macrocheira kaempferi , sometimes measuring 11 ft. (3.4 m) across from claw to claw

a similar but larger animal, T . derbianus, living in wooded areas of central and W Africa

any of various very large kelps of the genera Laminaria , Macrocystis , and Nereocystis

a large brown South American river otter , Pteronura brasiliensis , having a creamy chest patch and a long flat tail with a flanged border , hunted for its hide : now an endangered species

a large, black-and-white carnivore ( Ailuropoda melanoleuca ) of a bearlike family (Ailuropodidae) from China, that normally feeds on bamboo

(of an object ) much bigger than objects of its kind usually are

An object that is giant-sized is much bigger than objects of its kind usually are.

any land snail of the genus Achatina and related genera, mostly of tropical Africa, having shells up to 9 in. (23 cm) high

any of a genus ( Architeuthis ) of very large squids that reach a length of 18.3 m (60 ft): it is the largest invertebrate

any of a class of stars , such as Capella and Arcturus , that have swelled and brightened considerably as they approach the end of their life, their energy supply having changed

the longest step that a player is capable of making in this game

a children's game in which a leader calls upon individual players to advance toward him or her in a given number and variety of steps , the object being for one person to tag the leader and for all of them to run back to the starting line without being caught by the leader. Any player who is caught becomes the leader

a large toad , Rhinella marina , native to Central and South America but introduced into many countries to control insects and other pests of sugar-cane plantations

an umbelliferous garden escape , Heracleum mantegazzianum, a tall species of cow parsley that grows up to 3 1 ⁄ 2 metres (10 ft) and whose irritant hairs and sap can cause a severe reaction if handled

See under hornet

A giant-killer is a sportsman , sportswoman , or team that unexpectedly beats a much stronger opponent.

In sport, when a weaker team or competitor beats a much stronger, well-known team or competitor, their success is sometimes called a giant-killing .

either of two large white or brownish petrels of the genus Macronectes , of the Antarctic Ocean and adjacent seas

a wrass, Achoerodus gouldii , that occurs around the Great Barrier Reef

any of the planets Jupiter , Saturn , Uranus , and Neptune , characterized by large mass, low density , and an extensive atmosphere

dynamite composed of trinitroglycerine absorbed in kieselguhr

See sea scallop

→ big tree

a type of slalom in which the course is longer and the obstacles are further apart than in a standard slalom

→ ant bear (sense 1 )

a puffball , Calvatia gigantea , that is the largest of its kind , known to have grown to more than 5 ft. (1.6 m) in circumference

one of a German breed of large working dogs , resembling a larger and more powerful version of the standard schnauzer, having a pepper-and-salt or pure black, wiry coat, bushy eyebrows and beard , and a docked tail set moderately high, originally developed as a cattle herder but now often used in police work

any of various very large tortoises of the genus Testudo , of the Gal ápagos, Seychelles, and certain other islands, weighing up to 225 kilograms (495 lbs.)

If you refer to someone or something as a sleeping giant , you mean that they are powerful but they have not yet shown the full extent of their power.

a dwarf chestnut tree, Castanea pumila, of the eastern US, yielding edible nuts

Passiflora quadrangularis , a passionflower that has edible egg-shaped fleshy fruit

the largest European moth , an emperor, Saturnia pyri, reaching 15 cm (6 in.) in wingspan . It is mottled brown with a prominent ocellus on each wing and being night-flying can be mistaken for a bat

a promontory of columnar basalt on the N coast of Northern Ireland, in Antrim : consists of several thousand pillars , mostly hexagonal , that were formed by the rapid cooling of lava and the inward contraction of the lava flow

a slalom race in which the course is longer and has more widely spaced gates than in a giant slalom

an umbelliferous garden escape , Heracleum mantegazzianum, a tall species of cow parsley that grows up to 3 1 ⁄ 2 metres (10 ft) and whose irritant hairs and sap can cause a severe reaction if handled

a large toad , Rhinella marina , native to Central and South America but introduced into many countries to control insects and other pests of sugar-cane plantations

a large toad , Rhinella marina , native to Central and South America but introduced into many countries to control insects and other pests of sugar-cane plantations

A panda or a giant panda is a large animal rather like a bear, which has black and white fur and lives in the bamboo forests of China.

a giant Californian coniferous tree, Sequoiadendron giganteum , with a wide tapering trunk and thick spongy bark : family Taxodiaceae . It often reaches a height of 90 metres

a large scallop , Pecten magellanicus , of deep waters off the Atlantic coast of North America

a giant Californian coniferous tree, Sequoiadendron giganteum , with a wide tapering trunk and thick spongy bark : family Taxodiaceae . It often reaches a height of 90 metres

a dwarf chestnut tree, Castanea pumila, of the eastern US, yielding edible nuts

a large anteater of Central and South America , Myrmecophaga tridactyla