Simple past tense and past participle of gown.(verb)
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Use "gowned" in a sentence
"The operating theatre, Cho gowned and chatty, the nurse counting backwards with him from one hundred."
"There was one doctor with his back to the door and two additional figures, gowned and masked passing instruments in response to barked instructions."
"And the crazy family stuff, complete with a motherly white-haired and gowned Sherri Moon, seems to be an amalgamation of queues from FRIDAY THE 13TH, THE CHAIN SAW MASSACRE, and PSYCHO."