Definition of knocker in English:
2 informal A person who continually finds fault.
- What do the Bush detractors and the America knockers say now?
- The critics and the knockers were out in force to quickly write off their chances.
- Grant's gritty man-of-the-match performance against Crewe on Saturday was the perfect answer to criticism from manager Stan Ternent and the knockers in the Turf Moor stands.
Definition of knocker in:
- British & World English dictionary