(palmistry) Any of the short horizontal lines under the little finger and going to the edge of the palm.

(automotive) A line that conveys fluid from a vehicle's brake pedal to the brakes when they are applied.

(geometry) A line that, for a given triangle, passes through several important points, including the circumcentre, orthocentre and centroid; an analogous line for certain other 2- and 3-dimensional geometric figures.

The direction of the progression of a dance, almost universally counter-clockwise around the floor.

(of a writer) Paid at the rate of a penny per line. / (of writing) Long-winded, verbose; superficial, of little literary value.

To dry on a clothesline.

(automotive) An engine that has all cylinders in one line or row.

present participle of line up

simple past tense and past participle of line up

(computing, typography) The vertical bar ⟨|⟩.