Meaning of the word firth in English

What does firth mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

firth

US /fɝːθ/
UK /fɜːθ/

Noun

a long, narrow inlet of the sea, especially in Scotland

Example:
The boat sailed slowly up the firth.
We could see the distant hills across the firth.