Standard Lemma guide

sidelight

noun · 5 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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No pronunciation record was provided for this word.

1

noun

Meaning 1

A light found at the side of something; especially of a vehicle.

Definition source: English Wiktionary via Wiktextract

Examples

  • If it starts getting misty, put your sidelights on.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A light found at the side of something; especially of a vehicle.

(nautical) Red and green navigation lights indicating each side of a ship for collision avoidance; red on the port (left) and green on the starboard.

Definition source: English Wiktionary via Wiktextract

Usage: broadly

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

A window found at one or both sides of a door.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

A piece of incidental information that helps one understand a subject.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

light carried by a boat that indicates the boat's direction; vessels at night carry a red light on the port bow and a green light on the starboard bow

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: running light

Antonyms: none provided

Broader terms: light, light source

History

Etymology

From side + light.

Across languages

Translations

4 source translations are retained for this English entry.

  • Finnish: sivuvalo — light at the side of something
  • Polish: boczne światło — light at the side of something
  • Finnish: sivuikkuna — window at the side of a door
  • Polish: boczne okno — window at the side of a door