[ lok, lokh ]
/ lɒk, lɒx /

noun Irish English.

a lake.
a partially landlocked or protected bay; a narrow arm of the sea.
Compare loch.

Origin of lough

1505–15; Anglo-Irish spelling of Irish loch lake; compare Middle English low, lough(e), logh(e), Old English (Northumbrian) lūh < British Celtic *lux- (> Welsh llwch (obsolete) lake, Old Breton luh, Breton louc’h), apparently < early Irish; see loch
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for lough

British Dictionary definitions for lough


/ (lɒx, lɒk) /


an Irish word for lake 1
a long narrow bay or arm of the sea in Ireland
Compare loch

Word Origin for lough

C14: from Irish loch lake
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for lough



"a lake, pool," early 14c., Anglo-Celtic, representing a northern form of Irish and Gaelic loch, Welsh llwch, from PIE root *laku- (see lake (n.1)).

Online Etymology Dictionary, © 2010 Douglas Harper