Moisten \Mois"ten\, v. t. [imp. & p. p. {Moistened}; p. pr. & vb. n. {Moistening}.] 1. To make damp; to wet in a small degree. [1913 Webster] A pipe a little moistened on the inside. --Bacon. [1913 Webster] 2. To soften by making moist; to make tender. [1913 Webster] It moistened not his executioner's heart with any pity. --Fuller. [1913 Webster]