One who promotes the sport of cock-fighting; = COCKER sb.2 2.
1721. Bailey, s.v. Clear Walk, With Cock-fighters.
1789. Cowper (title), The Cock-fighters Garland.
1884. T. Holmes Gore, in Law Times, 8 Nov., 28/2. The licensing justices refused to renew a licence to a cockfighter.
¶ Co·ck fi·ghter = chief or champion fighter: see COCK sb.1 22.