Capper

• (n.) One whose business is to make or sell caps. • (n.) An instrument for applying a percussion cap to a gun or cartridge. • (n.) A by-bidder; a decoy for gamblers [Slang, U. S.].
Found on http://thinkexist.com/dictionary/meaning/capper/

Capper

Cap'per noun 1. One whose business is to make or sell caps. 2. A by-bidder; a decoy for gamblers. [ Slang, U. S.] 3. An instrument for applying a percussion cap to a gun or cartridge.
Found on http://www.encyclo.co.uk/webster/C/21

Capper

an antiquated term for the final in a series of jokes on the same
Found on http://www.comicalmanagement.com/pages/comical-terminology

capper

an antiquated term for the final in a series of jokes on the same subject matter which ends the routine with the biggest laugh.
Found on https://stand-upcomedy.com/glossary-of-stand-up-comedy-terms/

Capper

Capper is American slang for a by-bidder; a decoy for gamblers.
Found on http://www.probertencyclopaedia.com/browse/ZC.HTM

Capper

Meaning as a surname: Cap maker.
Found on http://www.encyclo.co.uk/local/20139

capper

the last topper (see below), geared towards getting the biggest laugh.
Found on http://www.newenglandcomedyguide.com/terminology.htm
No exact match found