lighthouse

noun

light·​house ˈlīt-ˌhau̇s How to pronounce lighthouse (audio)
Synonyms of lighthousenext
1
: a structure (such as a tower) with a powerful light that gives a continuous or intermittent signal to navigators
2

Illustration of lighthouse

Illustration of lighthouse
  • lighthouse 1

Examples of lighthouse in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Approved by George Washington and first illuminated in 1791, the lighthouse predates Maine’s statehood and remains an active aid to navigation on the rocky coast of Maine. Usa Today Network, USA Today, 10 June 2026 The Doberman alerted them to the presence of something in the pile of wood and started pulling the women back toward the front of the lighthouse. Sean Joseph Outkick, FOXNews.com, 8 June 2026 The lighthouse is owned by the Coast Guard after it was decommissioned in the 90's when the preservation society took over the maintenance. Bri Buckley, CBS News, 8 June 2026 Near Acadia National Park, Ellsworth and Swans Island have attractions in their own right, like unique local businesses, lighthouses, and secluded beaches. Erinne Magee, Travel + Leisure, 8 June 2026 See All Example Sentences for lighthouse

Word History

First Known Use

1606, in the meaning defined at sense 1

Time Traveler
The first known use of lighthouse was in 1606

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Cite this Entry

“Lighthouse.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lighthouse. Accessed 17 Jun. 2026.

Kids Definition

lighthouse

noun
light·​house -ˌhau̇s How to pronounce lighthouse (audio)
: a tower with a powerful light at the top that is built on or near the shore to guide sailors at night
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