auxiliary engine auxiliary engine
- (n) (nautical) a small engine (as one used on board ships to operate a windlass)
- Water poured in through the racked hull to disable auxiliary engine and radio.
- Its trip from Kiel to Danzig to take on cargo was productive of conflicting reports: some said the Buckau went by her wind; some, by means of her auxiliary engine.
- The self-powered rotor acts like an auxiliary engine, so the main engine need not be large.