lighthouse

noun

light·​house ˈlīt-ˌhau̇s How to pronounce lighthouse (audio)
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
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Cruise to Sheffield Island Lighthouse The Sheffield Island Lighthouse off the coast in Norwalk is featured with a three hour excursion that includes a narrated tour of the harbor and its three historic Norwalk lighthouses, ending with a one-hour stop at Sheffield Island. Kaitlyn Keegan, Hartford Courant, 21 June 2025 States look to federal reparations bill as lighthouse The late Rep. John Conyers, a Democrat from Michigan, had introduced H.R. 40 for years. Deborah Barfield Berry, USA Today, 20 June 2025 The current lighthouse, built in 1870, stands at exactly 198.49 feet, with 269 steps up to the lens room. Lydia Mansel, Travel + Leisure, 16 June 2025 The most popular trail is the Lighthouse Trail, a 5.9-mile out-and-back that leads to a towering hoodoo formation that resembles a lighthouse. Jill Robbins, Southern Living, 13 June 2025 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 30 Jun. 2025.

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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