screw propeller

English Thesaurus

1. a propeller with several angled blades that rotates to push against water or air (noun.artifact)

hypernym	:	propeller, propellor,
definition	:	a mechanical device that rotates to push against air or water (noun.artifact)

part meronym	:	outboard, outboard motor,
definition	:	internal-combustion engine that mounts at stern of small boat (noun.artifact)

part meronym	:	ship,
definition	:	a vessel that carries passengers or freight (noun.artifact)