power train is a noun meaning "wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed". It carries one recorded sense.
wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed
“the fool got his tie caught in the geartrain”
Definitions, synonyms and semantic relations for power train come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.