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
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.
Alcatraz has been a lighthouse, a military prison since 1859, a federal prison since 1934 which was closed in 1963. Letters To The Editor, The Orlando Sentinel, 20 July 2025 What is Sleeping Bear Dunes? Sleeping Bear Dunes National Lakeshore features sand dunes, inland Manitou Islands, forests, beaches, rivers and inland lakes, a historic lighthouse, trails, historic coastal villages and museums and more. Jenna Prestininzi, Freep.com, 16 July 2025 With its breezy lakefront boardwalk, historic lighthouse, and easy access to Michigan’s largest natural freshwater spring, the quiet harbor town of Manistique feels like the kind of place where time slows down—and that’s precisely the point. Lauren Dana Ellman, Travel + Leisure, 7 July 2025 Dive into the Forgotten Coast’s history and beginnings by touring its museums and historic lighthouses. Kelsey Glennon, Southern Living, 6 July 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

Browse Nearby Words

Cite this Entry

“Lighthouse.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lighthouse. Accessed 26 Jul. 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
Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!