I. ˈpə-kər verb
( puck·ered ; puck·er·ing -k(ə-)riŋ)
Etymology: probably irregular from poke (I)
Date: 1598
intransitive verb
: to become wrinkled or constricted
transitive verb
: to contract into folds or wrinkles
II. noun
Date: circa 1750
: a fold or wrinkle in a normally even surface