n. Effort expended on a particular task; toil, work.n. Workers in general; the working class, the workforce; sometimes specifically the labour movement, organised labour.n. A political party or force aiming or claiming to represent the interests of labour.n. The act of a mother giving birth.n. The time period during which a mother gives birth.v. To toil, to work.v. To belabour, to emphasise or expand upon (a point in a debate, etc).