Pos"set (?), n. [W. posel curdled milk, posset.] A beverage composed of hot milk curdled by some strong infusion, as by wine, etc., -- much in favor formerly. "I have drugged their posset." Shak.

Pos"set, v. t. [imp. & p. p. Posseted; p. pr. & vb. n. Posseting.] 1. To curdle; to turn, as milk; to coagulate; as, to posset the blood. [Obs.] Shak.

2. To treat with possets; to pamper. [R.] "She was cosseted and posseted." O. W. Holmes.