noun /ˈleɪ.baɪ/
a) A paved area at the side of a highway designated for drivers to stop in, for emergency parking, or where vehicles can wait, with larger lay-bys possibly having facilities like food vendors or public telephones.
1930: Avail yourself of our Lay-By Service — Hordern Brothers (a Sydney retailer) advertisement, 16 October 1930.
b) A railroad siding; a second, short railroad track just to the side of a railroad track, connected with the main track by a switch and used for unloading, bypassing, etc.
1931: enables you to secure Sale Bargains without the necessity of paying in full at once. Leave a deposit, pay the balance as it suits you, and on the completion of payments the goods will be delivered in the usual way. No interest is charged. — Anthony Hordern (another Sydney retailer), advertisement describing what they called their D.P.S., January 1931
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