This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A woman's garment, usually long and loose, used for informal wear at home.

n. a bathrobe.

n. a loose dressing gown for women.

n. a loose dressing gown for women

"I was bundled up in housecoat, hospital blankets and my little urine bag rested by me feet on the footrest of the wheelchair."

woman's clothing   

brunch coat    camisole   

negligee    neglige    peignoir    wrapper   

bathrobe    bedspread    caftan    ephod    cardigan    jammies    nightgown    housedress    mini-van    gambeson