3. To prosecute, or perfect, with effort; to urge streas, to labor a point or argument.

4. To belabor; to beat. [Obs.] Dryden.

LABORANT
Lab"o*rant, n. Etym: [L.laborans, p. pr. of laborare to labor.]

Defn: A chemist. [Obs.] Boyle.

LABORATORY
Lab"o*ra*to*ry, n.; pl. Laboratories. Etym: [Shortened fr.
elaboratory; cf. OF. elaboratoire, F. laboratoire. See Elaborate,
Labor.] [Formerly written also elaboratory.]

Defn: 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.

LABOR DAY
Labor Day.

Defn: In most of the States and Territories of the United States, a day, usually the first Monday of September, set aside as a legal holiday, in honor of, or in the interest of, workingmen as a class. Also, a similar holiday in Canada, Australia, etc.

LABORED
La"bored, a.

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