From The Collaborative International Dictionary of English v.0.48 [gcide]:
Giant \Gi"ant\, a.
Like a giant; extraordinary in size, strength, or power; as,
giant brothers; a giant son.
[1913 Webster]
Giant cell. (Anat.) See Myeloplax.
Giant clam (Zool.), a bivalve shell of the genus
Tridacna, esp. T. gigas, which sometimes weighs 500
pounds. The shells are sometimes used in churches to
contain holy water.
Giant heron (Zool.), a very large African heron ({Ardeomega
goliath}). It is the largest heron known.
Giant kettle, a pothole of very large dimensions, as found
in Norway in connection with glaciers. See Pothole.
Giant powder. See Nitroglycerin.
Giant puffball (Bot.), a fungus (Lycoperdon giganteum),
edible when young, and when dried used for stanching
wounds.
Giant salamander (Zool.), a very large aquatic salamander
(Megalobatrachus maximus), found in Japan. It is the
largest of living Amphibia, becoming a yard long.
Giant squid (Zool.), one of several species of very large
squids, belonging to Architeuthis and allied genera.
Some are over forty feet long.
[1913 Webster]
From WordNet (r) 3.0 (2006) [wn]:
Megalobatrachus maximus
n 1: large (up to more than three feet) edible salamander of
Asia [syn: giant salamander, Megalobatrachus maximus]