/ Dictionary / Index L Lough Neagh: Meaning and Definition of Find definitions for: Lough" Neagh' Pronunciation: (nā), [key] a lake in E central Northern Ireland: largest freshwater lake in the British Isles. ab. 18 mi. (29 km) long and 11 mi. (18 km) wide. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. lough Louhi Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language