sidelight

[ sahyd-lahyt ]

noun

1. an item of incidental information.
2. either of two lights light lights carried by a vessel under way at night, a red one on the port side and a green on the starboard.
3. light lights coming from the side.
4. a window or other aperture for light lights in the side of a building, ship, etc.
5. a window at the side of a door or another window.

sidelight

/ ˈsaɪdˌlaɪt /

noun

1. light coming from the side
2. a side window
3. either of the two navigational running lights used by vessels at night, a red light on the port and a green on the starboard
4. either of two small lights on the front of a motor vehicle, used to indicate the presence of the vehicle at night rather than to assist the driver
5. additional or incidental information

Word History and Origins

Origin of sidelight¹

First recorded in 1600–10; side ¹ + light ¹