ˈ ̷ ̷ˌ ̷ ̷ noun
1.
a. or side lighting : light coming or produced from the side
b.
(1) : incidental light or information upon a subject
fragments of information and of sidelight — Helen Macafee
it throws so much sidelight upon that rationalistic temper — William James
(2) : a means of such incidental illustration or illumination
curious sidelights thrown upon the politics of appointments — Saturday Review
throws many interesting sidelights upon the Russian character — Dial
giving humorous sidelights on misadventures — English Journal
2. : a narrow window flanking a door or larger window
the paneled doorway is flanked by fluted columns and sidelights — American Guide Series: Louisiana
3. : the red light on the port bow or the green light on the starboard bow carried by ships under way at night
4. : side lamp
5. : the thick glass covering of a ship's porthole