pucker
verb transitive[L. pectus; Gr. signifies closely, densely, to cover.]
To gather into small folds or wrinkles; to contract into ridges and furrows; to corrugate. His face pale and withered, and his’ skin puckered in wrinkles. It is usually followed by up; as, to pucker up cloth; but up is superfluous. It is a popular word, but not elegant.