Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
knocker is a noun meaning "(Yiddish) a big shot who knows it and acts that way; a boastful immoderate person". It carries 5 recorded senses.
(Yiddish) a big shot who knows it and acts that way; a boastful immoderate person
Yiddish
a person who knocks (as seeking to gain admittance)
“open the door and see who the knocker is”
one who disparages or belittles the worth of something
either of two soft fleshy milk-secreting glandular organs on the chest of a woman
a device (usually metal and ornamental) attached by a hinge to a door
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 knocker come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.