n. Plural form of line.n. Dispositions made to cover extended positions, and presenting a front in but one direction to an enemy.n. Form of a vessel as shown by the outlines of vertical, horizontal, and oblique sections.n. A school punishment in which a student must repeatedly write out a line of text related to the offence (e.g. "I must be quiet in class") a specified number of times; the lines of text so written out.n. The reins with which a horse is guided by his driver.v. Third-person singular simple present indicative form of line.