Definition of engines:
(N) :
Engines: Man's Use of Power, from the Water Wheel to the Atomic Pile is a science book for children by L. Sprague de Camp, illustrated by Jack Coggins, published by Golden Press as part of its Golden Library of Knowledge Series in 1959."Books of the Week" in The Science News-Letter, v. 76, no. 3, July 18, 1959, page 44.