chiefly Ireland : lake
chiefly Ireland : a bay or inlet of the sea

Examples of lough in a Sentence

Recent Examples on the Web On the shores of Belfast's lough, The Culloden Estate and Spa is a serene escape from the buzzy city scene. Ciara McQuillan, Condé Nast Traveler, 18 May 2022

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'lough.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


Middle English, of Celtic origin; akin to Old Irish loch lake; akin to Latin lacus lake — more at lake

First Known Use

14th century, in the meaning defined at sense 1

Time Traveler
The first known use of lough was in the 14th century

Dictionary Entries Near lough

Cite this Entry

“Lough.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lough. Accessed 7 Dec. 2023.

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