\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.