What is to pain one's self, to exert or trouble one's self; to take pains; to be solicitous. [Obs.] "She pained her to do all that she might." Chaucer called?

pain — To pain one's self, to exert or trouble one's self; to take pains; to be solicitous. [Obs.] "She pained her to do all that she might." Chaucer. (Webster's 1913.)

Sources