main-line locomotive

main-line locomotive

[′mān ‚līn ‚lō·kə′mōd·iv]
(mining engineering)
A large, high-powered locomotive which hauls trains of cars over the main haulage system.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The engines, which are replicas of big main-line locomotives, make you think you are traveling in Lilliput.