Meaning

noun an irritating or obnoxious person

noun any usually predatory wild animal considered undesirable; e.g., coyote

originDialectal form of vermin, derived from Latin vermis (“worm”), c. 1530–1540s. Perhaps influenced by Latin vargus (“bandit, outlaw, scoundrel”), though the pronunciation in /ɑː(ɹ)/ is more likely due to the same lowering of /ɛr/ > /ar/ found in carve < Middle English kerven and starve < Middle English sterven. The final syllable is probably altered after -ment; compare parchment < Middle English…

Etymology from Wiktionary, CC BY-SA 3.0