- a widened section of a stream, canal, etc. where vessels can lay over or pass
- a railroad siding
- Brit. a widened section as along a highway, for emergency parking
The definition of a lay-by is the wider part of a narrow body of water where a boat can anchor temporarily or pass other watercraft.
An example of a lay-by is a wider place where a boat on a canal would be able to pass and move ahead of other boats.
- Alternative spelling of lay-by.
- (UK) 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.
- (UK) 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.
- (nautical) A 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.
- (Australia, New Zealand, South Africa) 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.