Definitions
1.verbTo toil, to work.
2.verbTo belabour, to emphasise or expand upon (a point in a debate, etc)."I think we've all got the idea. There's no need to labour the point."
3.verbTo be oppressed with difficulties or disease; to do one's work under conditions which make it especially hard or wearisome; to move slowly, as against opposition, or under a burden.
4.verbTo suffer the pangs of childbirth.
5.verbTo pitch or roll heavily, as a ship in a turbulent sea.
6.adjectiveExpressive of strenuous effort."At the end of the marathon, her laboured breathing told us she was exhausted."
7.adjectiveOf writing or speech or similar, stilted or not natural due to too much effort being used in the production.