(transitive) To place (objects) into a line (usually used with "up"); to form into a line; to align.

(transitive, now rare, of a dog) To copulate with, to impregnate.

(geometry) An infinitely extending one-dimensional figure that has no curvature; one that has length but not breadth or thickness.

On a level with the eye of the observer, as of a picture hung in on a wall. / (idiomatic) At risk, as in a contest or enterprise. / Currently calling on the telephone.

An English and Scottish surname.

simple past tense and past participle of line

(film, theater) Words spoken by the actors. / (fortifications) Dispositions made to cover extended positions, and presenting a front in but one direction to an enemy.

Third-person singular simple present indicative form of line

Having a lining, an inner layer or covering. / (of paper) Having lines, ruled. / (of skin) Having visible lines or wrinkles.

(idiomatic) Suitable or appropriate; keeping with expectations, norms, ideals, or rules. / (of three or more objects) Positioned in a straight line. / (not comparable) assuming a position in the future.