Webster's Revised Unabridged Dictionary · 1913

Labor

Labor (lā"bẽr) , noun

[Old English labour, Old French labour, laber, labur, French labeur, Latin labor; compare Greek lamba`nein to take, Sanskrit labh to get, seize.]

1.
Physical toil or bodily exertion, especially when fatiguing, irksome, or unavoidable, in distinction from sportive exercise; hard, muscular effort directed to some useful end, as agriculture, manufactures, and like; servile toil; exertion; work.
God hath set Labor and rest, as day and night, to men Successive. — Milton
2.
Intellectual exertion; mental effort; as, the labor of compiling a history.
3.
That which requires hard work for its accomplishment; that which demands effort.
Being a labor of so great a difficulty, the exact performance thereof we may rather wish than look for. — Hooker
4.
Travail; the pangs and efforts of childbirth.
The queen's in labor, They say, in great extremity; and feared She'll with the labor end. — Shakespeare
5.
Any pang or distress. — Shakespeare
6.
(Nautical) The pitching or tossing of a vessel which results in the straining of timbers and rigging.
7.
A measure of land in Mexico and Texas, equivalent to an area of 177f acres. — Bartlett
8.
(Mining) A stope or set of stopes. [Sp. Amer.]

Labor , intransitive verb

[Old English labouren, French labourer, Latin laborare. See Labor, n.]

1.
To exert muscular strength; to exert one's strength with painful effort, particularly in servile occupations; to work; to toil.
Adam, well may we labor still to dress This garden. — Milton
2.
To exert one's powers of mind in the prosecution of any design; to strive; to take pains.
3.
To be oppressed with difficulties or disease; to do one's work under conditions which make it especially hard, wearisome; to move slowly, as against opposition, or under a burden; to be burdened; -- often with under, and formerly with of.
The stone that labors up the hill. — Granville
The line too labors, and the words move slow. — Pope
To cure the disorder under which he labored. — Sir W. Scott
Come unto me, all ye that labor and are heavy laden, and I will give you rest. — Matt. xi. 28
4.
To be in travail; to suffer the pangs of childbirth; to be in labor.
5.
(Nautical) To pitch or roll heavily, as a ship in a turbulent sea. — Totten

Labor , transitive verb

[French labourer, Latin laborare.]

1.
To work at; to work; to till; to cultivate by toil.
The most excellent lands are lying fallow, or only labored by children. — W. Tooke
2.
To form or fabricate with toil, exertion, or care.
To labor arms for Troy. — Dryden
3.
To prosecute, or perfect, with effort; to urge strenuously; as, to labor a point or argument.
4.
To belabor; to beat. [Obsolete] — Dryden