I. ˈbau̇n(t)sə(r) noun
( -s )
1. Britain
a. : boaster , bully , liar
b. : lie , whopper
2. : something big : a good stout example of the kind
that baby is a bouncer
3. : one that ejects disorderly persons (as at a dance hall, gambling house, or barroom) or keeps gate-crashers out (as at a party or ceremony)
4. slang : caboose
II. noun
1. : bumper IV,1f
2. : a batted baseball that bounces