hatstand adjective 1noun 1forms 3 adjective1 •(UK, slang) Crazy, insane.Chris Merriman is 43, comes from Rugby and is totally hatstand. Here's proof: Fave planet? "The Milky Way." — 1988 noun1 •(UK) A device used to store hats upon, consisting of a vertical pole with a sturdy base to prevent toppling, and an array of pegs to hold the hats.I'm sure the Brunel-designed stone-built structure would have had a hatstand for his trademark stovepipe. I can picture him rocking up there of a morning and lobbing it nonchalantly onto the hatstand. — 2021 formshatstands · more hatstand · most hatstand