The Mariner's Compass
Defined in 1 dictionary — Black's (1910)
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
An instrument used by mariners to point out the course of a ship at sca. It consists of a magnetized steel bar called the "needle," attached to the under side of a card, upon which are drawn the points of the compass, and supported by a fine pin, upon which it turns freely in a horizontal plane.