MORTAR n.
A building material made by mixing lime, cement, or plaster of Paris, with sand, water, and sometimes other materials; -- used in masonry for joining stones, bricks, etc., also for plastering, and in other ways. Mortar bed, a shallow box or receptacle in which mortar is mixed. -- Mortar board. (a) A small square board…
NATIONAL a.
nder Flag. -- National guard, a body of militia, or a local military organization, as in Paris during the French Revolution, or as certain bodies of militia in other European countries and in the United States. -- National salute, a salute consisting of as many guns as there are States in the Union. [U.S.]…
NEPTUNE n.
nown planet of our system, discovered -- as a result of the computations of Leverrier, of Paris -- by Galle, of Berlin, September 23, 1846. Its mean distance from the sun is about 2,775,000,000 miles, and its period of revolution is about 164,78 years. Neptune powder, an explosive containing nitroglycerin, -- used in b…