[Fr., from L- ingenium.] A machine fitted to do work or set machinery in motion. There are various kinds - steam-engine, air-engine, fire-engine, pumping engine, and donkey-engine. Military engineering includes the designing and building of fortifications ; civil engineering includes the building of railways, canals, waterworks, bridges, lighthouses, docks, and tunnels; mining engineering has regard to the sinking and working of mines; electrical engineering includes all kinds of electrical work.