(rugby) an imaginary line running across the pitch perpendicular to the touchline and passing through the breakdown or set piece. The subsequent phase is said to have passed "over the gain line" if the gain line at the subsequent breakdown is in front of the last, or "behind the gain line" if it is behind.

plural of line break

A line made on a surface by snapping a taut string or cord dusted with colored chalk. / The tool used to make a chalk line.

(basketball) A line from which a player takes a free throw / (baseball, softball) One of the two lines on the edge of a field marking the area inside which a fair ball may be hit.

(idiomatic) To submit to the rules of a higher authority; obey; conform. / (Philippines) to line up

(idiomatic) A defining moment; a cutoff point.

(mathematics) An integral whose integrand's domain is a curve.

plural of bottom line

plural of bread line

plural of water line