en connaître un rayon

French

Etymology

Literally, “to know a bookshelf (about it)”.

Pronunciation

• IPA^(key): /ɑ̃ kɔ.nɛ.tʁ‿œ̃ ʁɛ.jɔ̃/, /ɑ̃ kɔ.ne.tʁ‿œ̃ ʁe.jɔ̃/

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Verb

en connaître un rayon

1. (informal) to know a fair bit about something, to know a thing or two about something, to know one's stuff, to know one's onions

   Synonym: s’y connaître

Conjugation

• see connaître