ricket · adjective1
From a dialectal past participle of rick (“to rattle, jiggle, make a noise”), equivalent to rick + -et.
ricket · verb, noun2
Uncertain. Perhaps an alteration of racket, influenced by Etymology 1 above, or perhaps related to Norwegian Nynorsk rikta (“to make a noise, creak”).
Etymology from Wiktionary, CC BY-SA 4.0.