Lough Neagh, sometimes Loch Neagh, (/ˌlɒx ˈneɪ/) is a large freshwater lake in Northern Ireland. It is the biggest lake in Northern Ireland, supplying 40% of its water; the biggest on the island of Ireland, and the biggest in the British Isles. Its name comes from Irish: Loch nEathach, meaning "Lake of Eathach" .
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