The story
Coined by English author J. K. Rowling, presumably from slither (verb) + -in (variant of -en (“pertaining to”)) or -ing (“belonging to; of the kind of”).
Etymology from Wiktionary, CC BY-SA 4.0.
Slytherin
Today it means: A person having traits associated with Slytherin house from the Harry Potter series, including ambition, cunning, or an affinity for snakes or the colours green and silver. Full definition →