locomotive

 
Pronunciation: /ləʊkəˈməʊtɪv/

noun

  • a powered railway vehicle used for pulling trains: a diesel locomotive

adjective

[attributive]
  • relating to or effecting locomotion: locomotive power
  • archaic (of a machine, vehicle, or animal) having the power of progressive motion: locomotive bivalves have the strongest hinges

Origin:

early 17th century (as an adjective): from modern Latin locomotivus, from Latin loco (ablative of locus 'place') + late Latin motivus 'motive', suggested by medieval Latin in loco moveri 'move by change of position'