“Lough.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lough. Accessed 25 Dec. 2025.

LOUGH definition: 1. in Ireland, a lake or an inlet of the sea or ocean: 2. in Ireland, a lake or an inlet of the…. Learn more.

Definition of lough noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Nov 24, 2025 · lough (plural loughs) (Ireland) A lake or long, narrow inlet, especially in Ireland. quotations

A lough is a term used in Ireland and Scotland to refer to a lake or a sea inlet. It is derived from the Irish and Scottish Gaelic words "loch," which means "lake."

lough (lɒk, lɒx) n. Irish Eng. 1. a lake. 2. a partially landlocked or protected bay.

2 meanings: 1. → an Irish word for lake1 2. a long narrow bay or arm of the sea in Ireland.... Click for more definitions.