pilot engine
Preserved but no longer current.
Meaning · English
The leading engine when two are needed to draw a railway train; also an engine sent ahead of a trarn carrying important personages, etc., to ensure that the line is clear.
Era: ca. 1898 (Victorian)
Sources & notes
Reproduced from Brewer’s Dictionary of Phrase and Fable (1898 edition, public domain; archive.org, retrieved 2026-07-31; OCR text, minor errors possible). Reflects the scholarship and attitudes of its era.
Common questions
What does “pilot engine” mean?
The leading engine when two are needed to draw a railway train; also an engine sent ahead of a trarn carrying important personages, etc., to ensure that the line is clear.
Is “pilot engine” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.