mammoth mammoth /ˈmæməθ/

adjective

1. () So exceedingly large or extensive as to suggest a giant or mammoth  ( mammoth , gigantic )
   so exceedingly large or extensive as to suggest a giant or mammoth
    A gigantic redwood
   a gigantic redwood
    Gigantic disappointment
   gigantic disappointment
    A mammoth ship
   a mammoth ship
    A mammoth multinational corporation
   a mammoth multinational corporation
   

noun

1. Any of numerous extinct elephants widely distributed in the Pleistocene; extremely large with hairy coats and long upcurved tusks  ( mammoth )
   any of numerous extinct elephants widely distributed in the Pleistocene; extremely large with hairy coats and long upcurved tusks