n. & adj.
--n.
1. an imaginary or mythical being of human form but superhuman size.
2 (in Greek mythology) one of such beings who fought against the gods.
3 an abnormally tall or large person, animal, or plant.
4 a person of exceptional ability, integrity, courage, etc.
5 a large star.
--attrib.adj.
1. of extraordinary size or force, gigantic; monstrous.
2 colloq. extra large (giant packet).
3 (of a plant or animal) of a very large kind.
Phrases and idioms:
giant-killer a person who defeats a seemingly much more powerful opponent.
Derivatives:
giantism n. giant-like adj.
Etymology: ME geant (later infl. by L) f. OF, ult. f. L gigas gigant- f. Gk