Mammoth (John Varley)
WordNet
adjective
(1) So exceedingly large or extensive as to suggest a giant or mammoth
"A gigantic redwood"
"Gigantic disappointment"
"A mammoth ship"
"A mammoth multinational corporation"
noun
(2) Any of numerous extinct elephants widely distributed in the Pleistocene; extremely large with hairy coats and long upcurved tusks