/ ˈpɒsɪt; NAmE ˈpɑːs-/
■ noun
in the past, a drink made with hot milk and beer or wine
■ verb
( BrE ) ( -tt- , NAmE also -t- ) [ v ] if a baby possets , milk comes back up from its stomach and out through its mouth
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WORD ORIGIN
late Middle English : of unknown origin. The verb is first recorded in English dialect in the late 19th cent.