Other forms: lochs, loches
A loch is a lake, in Scottish use. Loch Ness, a sea loch, beside the loch.
A sea loch is an arm of the sea rather than fresh water, which is what England would call a fjord or an inlet. The ch is said at the back of the throat, and saying it as lock marks somebody out immediately.
1nounlochA lake, in Scottish use.
“The old castle stands on a small island in the middle of a Scottish loch.”
loch is a lake.
Scottish Gaelic loch means a lake; the Irish lough is the same word.
Scottish Gaelic
loch
Middle English
lough
English, today
loch
From Middle English lough, borrowed from Scottish Gaelic loch. a doublet of lay and Looe and lough.
Etymology from Wiktionary, CC BY-SA