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A lay-by is a short extra strip beside a road where a driver can pull off and stop — to rest, check a map, or wait. You see it on signs in Britain, Ireland, Australia and New Zealand. It is not a big rest stop with shops; often it is just a bay. In the United States people say pull-off or turnout, so American English may never use this word. Though actually, in some older British and Australian shops, lay-by also meant paying a little now and collecting the thing later — like American . Same spelling, different life. The road sense is the one you meet in driving English.
路邊停車灣（英國等用語；台灣路上較常說「路肩」或「緊急停車彎」）
組成lay + by: you put the vehicle by the side of the road.
原始詞典資料4 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
lay-bynoun/ˈleɪ.baɪ/
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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 such as food vendors or public telephones.
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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.
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nauticaltransportA widened section of a narrow river or canal, formed to one side so as to leave the channel free, for mooring of vessels, where vessels can lay over or allow others to pass.
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A method of retail purchase in which the selected goods are set aside and the customer pays for them in instalments, receiving them when fully paid; layaway.
- 1930 October 16, Hordern Brothers (Sydney retailer), advertisement, quoted in 1966, Sidney J. Baker, The Australian Language, second edition, chapter X, section 2, page 206, Avail yourself of our Lay-By Service
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。