pucker (v.) Look up pucker at Dictionary.com
1590s, "prob. earlier in colloquial use" [OED], possibly a frequentative form of pock, dialectal variant of poke "bag, sack" (see poke (n.1)), which would give it the same notion as in purse (v.). "Verbs of this type often shorten or obscure the original vowel; compare clutter, flutter, putter, etc." [Barnhart]. Related: Puckered; puckering.
pucker (n.) Look up pucker at Dictionary.com
1726, literal; 1741, figurative; from pucker (v.).