I. mam ‧ moth 1 /ˈmæməθ/ BrE AmE adjective [only before noun]
extremely large SYN enormous , gigantic :
Reforming the prison system would be a mammoth task.
a mammoth corporation
II. mammoth 2 BrE AmE noun [countable]
[ Date: 1700-1800 ; Language: Russian ; Origin: mamont , mamot ]
an animal like a large hairy ↑ elephant that lived on Earth thousands of years ago