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The workroom of a chemist; also, a place devoted to experiments in any branch of natural science; as, a chemical, physical, or biological laboratory. Hence, by extension, a place where something is prepared, or some operation is performed; as, the liver is the laboratory of the bile.

Bearing marks of labor and effort; elaborately wrought; not easy or natural; as, labored poetry; a labored style.

In a labored manner; with labor.

One who labors in a toilsome occupation; a person who does work that requires strength rather than skill, as distinguished from that of an artisan.

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.

Requiring labor, perseverance, or sacrifices; toilsome; tiresome. Dost thou love watchings, abstinence, or toil, Laborious virtues all Learn these from Cato. Addison.

Not involving labor; not laborious; easy.

Laborious. [Obs.] Wyatt. -- La"bor*ous*ly, adv. [Obs.] Sir T. Elyot.

Made with, or requiring, great labor, pains, or diligence. [Obs.] Shak.

A region of British America on the Atlantic coast, north of Newfoundland. Labrador duck (Zoöl.), a sea duck (Camtolaimus Labradorius) allied to the eider ducks. It was formerly common on the coast of New England, but is now supposed to be extinct, no specimens having been reported since 1878. -- Labrador feldspar. See…

A kind of feldspar commonly showing a beautiful play of colors, and hence much used for ornamental purposes. The finest specimens come from Labrador. See Feldspar.

Lips. [Obs. & R.] Shak.

A piece of wood, shell, stone, or other substance, worn in a perforation of the lip or cheek by many savages.

Like the genus Labrus; belonging to the family Labridæ, an extensive family of marine fishes, often brilliantly colored, which are very abundant in the Indian and Pacific Oceans. The tautog and cunner are American examples.

Having thick lips.

A lip or edge, as of a basin.

A genus of marine fishes, including the wrasses of Europe. See Wrasse.

Of, pertaining to, or derived from, the laburnum.

A poisonous alkaloid found in the unripe seeds of the laburnum.

A small leguminous tree (Cytisus Laburnum), native of the Alps. The plant is reputed to be poisonous, esp. the bark and seeds. It has handsome racemes of yellow blossoms.