Lesson
来自Big Physics
Middle English: from Old French leçon, from Latin lectio (see lection).
wiktionary
From Middle English lessoun, from Old French leçon, from Latin lēctiō, lēctiōnem(“a reading”), from legō(“I read, I gather”). Doublet of lection.
etymonline
lesson (n.)
early 13c., "a reading aloud from the Bible," also "something to be learned by a student," from Old French leçon, from Latin lectionem (nominative lectio) "a reading," noun of action from past participle stem of legere "to read," from PIE root *leg- (1) "to collect, gather," with derivatives meaning "to speak (to 'pick out words')." Transferred sense of "an occurrence from which something can be learned" is from 1580s.