The Collaborative International Dictionary of English v.0.48:

Pucker \Puck"er\, v. t. & i. [imp. & p. p. Puckered; p. pr. &
   vb. n. Puckering.] [From Poke a pocket, small bag.]
   To gather into small folds or wrinkles; to contract into
   ridges and furrows; to corrugate; -- often with up; as, to
   pucker up the mouth. "His skin [was] puckered up in
   wrinkles." --Spectator.
   [1913 Webster]