lighthouse

noun

light·​house ˈlīt-ˌhau̇s 

1

: a structure (such as a tower) with a powerful light that gives a continuous or intermittent signal to navigators

2

: beacon sense 2

Illustration of lighthouse

• lighthouse 1

Examples of lighthouse in a Sentence

Recent Examples on the Web

In addition to this some young neutron stars, known as pulsars, spin as rapidly as 700 times per second while also blasting twin beams of radiation that sweep across the cosmos like beams of light from a cosmic lighthouse. — Robert Lea, Space.com, 24 Sep. 2026

The island is known for its seaweed-eating sheep and lighthouses. — Raven Brunner, PEOPLE, 24 Sep. 2026

Sheridan Gorman was shot and killed while visiting friends near a pier and lighthouse in Chicago. — Louis Casiano, FOXNews.com, 24 Sep. 2026

Lengkuas Island, with its 19th-century Dutch lighthouse, also attracts picnickers, but beneath the waves, the view is even better. — Claire Turrell, Condé Nast Traveler, 23 Sep. 2026

Word History

First Known Use

1606, in the meaning defined at sense 1

Rhymes for lighthouse

• alehouse
• almshouse
• backhouse
• baghouse
• bakehouse
• bathhouse
• bauhaus
• blockhouse
• boathouse
• brewhouse
• bunkhouse
• clubhouse

Kids Definition

lighthouse

noun

light·​house -ˌhau̇s 

: a tower with a powerful light at the top that is built on or near the shore to guide sailors at night