English

Noun

tank engine ‎(plural tank engines)

1. a type of steam locomotive train which carries its own fuel and water in the same unit, and so does not pull a tender

   Cuthbert Hamilton Ellis, The Beauty of Old Trains (1952) p. 117:

   • The 2-4-2 tank engines of the Great Eastern and the London and North Western were simply adaptations of 2-4-0 main-line engines; the 0-4-4 tank engine owed its parentage to the archaic 0-4-2 mixed traffic.

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