firth
/fəːθ
/noun
A narrow inlet of the sea; an estuary: [in place names]: the Moray Firth...
- He told her the tales of the sea lochs and the firths that decorated the coast.
- It was then stationed off Fife Ness to guide ships approaching the firths of Tay and Forth.
- The project would be in addition to the new £89m road crossing already planned 14 miles upstream in the upper firth to take pressure off the existing bridge.
Origin
Middle English (originally Scots), from Old Norse fjǫrthr (see fjord).