Meaning

noun someone who hunts or fishes illegally on the property of another

noun a cooking vessel designed to poach food (such as fish or eggs)

noun small slender fish (to 8 inches) with body covered by bony plates; chiefly of deeper northern Pacific waters

originEtymology tree English poach Proto-Indo-European *-yósder. Proto-Italic *-āzijos Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Proto-West Germanic *-ārī Old English -ere Middle English -ere English -er English poacher From poach + -er.

Etymology from Wiktionary, CC BY-SA 3.0