Merriam-Webster's Collegiate® Dictionary, 11th Edition
GIANT
I. noun
Etymology: Middle English giaunt, from Anglo-French geant, from Latin gigant-, gigas, from Greek
Date: 14th century
a legendary humanlike being of great stature and strength,
2. a living being of great size, a person of extraordinary powers, something unusually large or powerful, giantlike adjective
II. adjective
Date: 15th century
having extremely large size, proportion, or power