pucker
definition
to gather or contract into wrinkles or folds
example
As the lemon juice touched her tongue, her lips began to pucker in response to the sour taste.
synonyms
wrinklecrumplefurrow
word origin — The word 'pucker' likely originates from the Middle English word 'poukar', which means to gather or contract, probably derived from Old Norse 'pukkr' which means to fold or crease.