MORRIS-PIKE. A formidable Moorish weapon, the precursor of the boarding-pike.

MORSE. See [Walrus].

MORSING POWDER. An old term for priming powder.

MORTAR. A short piece of ordnance used for throwing shells, so that they may fall nearly vertical; they thus acquire force for breaking through roofs, decks, &c. It is fired at a fixed angle of elevation, generally at 45°, the charge of powder varying according to the range required.

MORTAR-BED and Bed-beams. See [Bomb-beds], &c.

MORTAR-VESSEL. See [Bomb-vessel].

MORTGAGE. A registered ship, or share therein, which has been made a security for a money-loan, or other valuable consideration, is termed a mortgage in the Merchant Shipping Act.

MORTICE. A morticed block is one made out of a single block of wood, chiselled for one or more sheaves; in distinction from a made block. The chisel used for morticing is peculiar to that purpose.

MORUACH. A peculiar seal, which has been frequently mistaken on our northern shores for a mermaid.

MOSES. A flat-bottomed boat used in the West Indies for bringing off hogsheads of sugar; it is termed single or double, according to its size.