chump 1
— chumpish , adj. — chumpishness , n.
/chump/ , n.
1. Informal. a stupid person; dolt: Don't be a chump - she's kidding you along.
2. a short, thick piece of wood.
3. the thick, blunt end of anything.
4. Slang. the head.
5. off one's chump , Brit. Slang. crazy.
[ 1695-1705; perh. b. CHUNK 1 and LUMP ]
chump 2
/chump/ , v.t. , v.i.
to bite or chew; munch.
Also, chomp .
[ 1850-55; var. of CHAMP 1 ]