loose fish

noun — 2 senses

loose fish

noun

1

Colloquial Someone of irregular or dissolute habits.

Mr. Wade began to repent of his too easy taking of matters in the beginning. Not that he had a suspicion of Rex, but that he had remembered that Dick was always a loose fish.1874, Marcus Clarke, For the Term of His Natural Life, IV.2:

2

Obsolete A prostitute.

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.