side·light | \ˈsīd-ˌlīt \

Definition of sidelight 

1a : light coming or produced from the side

b : incidental light or information

2 : the red light on the port bow or the green light on the starboard bow carried by ships underway at night

Examples of sidelight in a Sentence

The book includes some amusing sidelights about his childhood.

Recent Examples on the Web

The front door was painted bright turquoise — Ms. Negrin’s favorite color — and the plain-glass sidelights that allowed passers-by to see into the house were replaced with bottle-glass windows that offer privacy without blocking sunlight. Tim Mckeough, New York Times, "An Angular Beach House That’s Soft Inside," 14 May 2018 The front door with sidelights, transom, and a half-moon window over the second floor opens into the spacious foyer with an inlaid hardwood floor, offering a preview of the luxurious interior. Joan Walden,, "Property of the Week: 3 Erica Lane, West Simsbury," 20 July 2017 Others see performance as a sidelight to other professional careers. Jane Wooldridge, miamiherald, "These 18 made the cut. That’s when the real work began. Now they’re part of the Entourage. | Miami Herald," 22 Apr. 2018 The plots are reasonably complicated, draw on McManus' outdoor experiences and are salted with quirky sidelights. Bill Monroe,, "RIP Pat McManus, a master outdoor humorist and teacher," 13 Apr. 2018 One of the more remarkable sidelights to this story is something said by former Browns general manager Mike Lombardi. Terry Pluto,, "Cleveland Browns brought Doug Pederson back to NFL -- Terry Pluto (video)," 2 Feb. 2018 During a house check at 12:30 p.m. Nov. 28, the caretaker found the front left glass sidelight window was shattered and on the floor., "West Boca Raton Crime Log: Nov. 22 - Dec. 3," 23 Jan. 2018 Her mother had placed a hat with a wide brim on a wall sidelight. Jacques Kelly,, "Harriet Quandt, retired teacher and community volunteer," 31 Oct. 2017 As a sidelight to the game, Sue Bird will continue her pursuit of Ticha Penicheiro for the WNBA's all-time lead in assists. John Altavilla,, "Sun Have Been Hot With New Role For Alex Bentley," 7 Aug. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sidelight.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of sidelight

1610, in the meaning defined at sense 1a

Keep scrolling for more

Learn More about sidelight

Statistics for sidelight

Look-up Popularity

Time Traveler for sidelight

The first known use of sidelight was in 1610

See more words from the same year

Keep scrolling for more

More Definitions for sidelight



English Language Learners Definition of sidelight

: a piece of information that is in addition to the main information

More from Merriam-Webster on sidelight

See words that rhyme with sidelight

Comments on sidelight

What made you want to look up sidelight? Please tell us where you read or heard it (including the quote, if possible).


exaggeratedly or childishly emotional

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Roman Mythology Quiz

  • the-triumph-of-venus-by-alessandro-magnasco
  • Boreal comes from the name of the ancient Greek god of which wind?
Spell It

Can you spell these 10 commonly misspelled words?

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!