from The Century Dictionary.
- noun A railroad-train running during the night.
Sorry, no etymologies found.
"Don't worry, Haldane," said his first acquaintance; "there is an owl-train along at eleven to-night, and you can mail your check or draft on that if you do not care to travel at such an unearthly hour."
"Burnside should cross the Rappahannock to-day or to-morrow, at the latest," Mr. Vosburgh had remarked at breakfast, to which he had come from the Washington owl-train.