firth
n. countable C2 Proficiency US //ˈfɝθ// UK //fˈɜːθ// firth
n. a long, narrow area of sea that reaches far into the land, especially in Scotland. It is similar to a very wide river mouth where the water is salty.
n. a long, narrow arm of the sea, often representing the estuary of a major river. Primarily used in Scottish geographical contexts.
The sun sets beautifully over the wide firth.
The fishing boats returned to the safety of the firth as the storm clouds gathered over the open sea.
The industrial landscape along the firth has transformed significantly over the last century, moving from heavy shipbuilding to protected wildlife conservation zones.
Usage
Commonly appears in Scottish place names, such as the Firth of Forth or the Firth of Clyde.