Definition of "jammies"

GUY: I've always worn jammies. Don't think I'd feel right without 'em. SAM [Tosses pajamas to Guy L.]: Then you wear them.

1961, Patricia McLaine, Love Is Contagious‎, Dramatists Play Service, Inc., page 48

I was just in my pajamas and slippers, and I blushed because she was looking at me. Then she whispered, "Take off your jammies, and love me up good, Arlene. Please, I want you to."

2009, Arlene Gorey, My Spanking Diary, page 28

Took her a sec to come to the door; but she did, eventually. In jammies. Like she'd stayed in, couldn't sleep, and got hungry.

2022, Sean Thor Conroe, Fuccboi‎, Hachette