"rotors" in the noun sense
1. rotor, rotor coil
the rotating armature of a motor or generator
the revolving bar of a distributor
rotating mechanism consisting of an assembly of rotating airfoils
"there are horizontal rotors on a helicopter or compressor rotors in a jet engine"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License