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

When these rapidly spinning neutron stars blast out radiation from their poles, that radiation sweeps across the cosmos like beams of light from a cosmic lighthouse. —Robert Lea, Space.com, 3 Apr. 2026

Gorman, who was with her friends at the time on the pier, looked behind the lighthouse and saw Medina-Medina there. —Adam Sabes, FOXNews.com, 30 Mar. 2026

Gorman was the first to approach the lighthouse and looked around to the other side, then quickly walked back to her friends and told them a man was there, prosecutors said. —Lauren Victory, CBS News, 27 Mar. 2026

While walking on the pier, Gorman was startled to find Medina, wearing all black and a ski mask, hiding near the lighthouse. —Madeline Buckley, Chicago Tribune, 27 Mar. 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