Meaning of PROPELLER in English

[pro.pel.ler] also pro.pel.lor n (1780): one that propels; esp: a device that consists of a central hub with radiating blades placed and twisted so that each forms part of a helical surface and that is used to propel a vehicle (as a ship or airplane)

Merriam-Webster English vocab.      Английский словарь Merriam Webster.