say it: HEH-klur
heckler is a noun meaning "someone who tries to embarrass you with gibes and questions and objections". It carries one recorded sense.
someone who tries to embarrass you with gibes and questions and objections
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for heckler come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.