An engine is a device that converts energy into mechanical power. The crossword solutions for the term ENGINE include MECHANISM (9 letters), TURBINE (7 letters), DIESEL (6 letters), MACHINE (7 letters), MOTOR (5 letters), AERO (4 letters), HEMI (4 letters), and TWIN (4 letters). MECHANISM refers to a system of parts that work together to produce a specific result. Turbine is a rotary engine that uses a continuous stream of air or steam to generate power. DIESEL is an internal combustion engine that uses DIESEL fuel to generate power. MACHINE is a device that uses energy to perform a task. MOTOR is an electrical device that converts electrical energy into mechanical energy. Aero is a type of engine that uses air as a propellant. Hemi is a type of engine with two cylinders that are arranged in a half-circle. TWIN is a type of engine with two cylinders that are arranged side by side.