Meaning

noun a social class comprising those who do manual labor or work for wages

noun concluding state of pregnancy; from the onset of contractions to the birth of a child

noun a political party formed in Great Britain in 1900; characterized by the promotion of labor's interests and formerly the socialization of key industries

originFrom Middle English labouren, from Old French laborer, from Latin laborare (“(intransitive) to labor, strive, exert oneself, suffer, be in distress, (transitive) to work out, elaborate”), from labor (“labor, toil, work, exertion”); perhaps remotely akin to robur (“strength”). Displaced native English swink (“toil, labor”).

Etymology from Wiktionary, CC BY-SA 3.0