firth[noun]Synonyms: inlet, arm, bay, cove, creek, gulf, harbor, loch, lough, slough
[TahlilGaran] English Synonym Dictionary ▲
firth /fɜːθ $ fɜːrθ/
noun [countable] a narrow area of sea between two areas of land, or the place where a river flows into the sea – used especially in Scotland:
the Firth of Forth [TahlilGaran] Dictionary of Contemporary English ▲