Laboring La"bor*ing, a. 1. That labors; performing labor; esp., performing coarse, heavy work, not requiring skill also, set apart for labor; as, laboring days. The sleep of a laboring man is sweet. --eccl. v. 12. 2. Suffering pain or grief. --Pope. Laboring oar, the oar which requires most strength and exertion; often used figuratively; as, to have, or pull, the laboring oar in some difficult undertaking.