Meaning

noun an employee who performs clerical work (e.g., keeps records or accounts)

noun a salesperson in a store

verb work as a clerk, as in the legal business

originFrom Middle English clerc, from Old English clerc, from Late Latin clēricus (“priest, clergyman, cleric”, also generally “learned man, clerk”), from Ancient Greek κληρικός (klērikós, “of the clergy”, adj. in church jargon), from κλῆρος (klêros, “lot, inheritance”, originally “shard used in casting lots”). Doublet of cleric. Compare typologically Russian дьяк (dʹjak) (akin to дья́кон (dʹjákon)).

Etymology from Wiktionary, CC BY-SA 3.0