Green’s Dictionary of Slang

1. (drugs) ketamine.

2001		ONDCP Street Terms 13: Ket — Ketamin.
2007		R. Milward Apples (2023) 111: I was seeing all sorts of [...] breathing doors. It was fuckin acid or ket.

2. (N.Z.) an electric kettle.

2003

McGill Reed Dict. of N.Z. Sl.