Firth is a word in the English and Scots languages used to denote various coastal waters in the United Kingdom, predominantly within Scotland. In the Northern Isles, it more often refers to a smaller inlet.

The Economist, 4 Dec. 2019 Gray and harbor seals are a common sight in this firth, or estuary, where several major rivers meet the North Sea. National Geographic, 16 Feb. 2017

May 7, 2025 · Brittany Karen Firth, 41, from St. Augustine, was arrested on charges of production, attempted production, distribution and receipt of child sexual abuse material.

Jan 8, 2026 · A firth is primarily a type of ria, which is a drowned river valley created when rising sea levels flood the lower portion of a river system. During the glacial periods, the immense weight of the …

The attention devoted to the firth depends on operational factors and on what is needed elsewhere in the patrol area.

Definition of firth noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Jun 24, 2025 · Noun firth (plural firths) An arm or inlet of the sea; a river estuary. [from c. 1600]

May 16, 2018 · The firth is named after Scotland’s largest river, River Tay, that discharges its waters into the Firth of Tay. Other firths found in Scotland include the Dornoch Firth, the Firth of Forth, the Firth …

A firth is a long, narrow area of sea or ocean that extends into the land, usually formed by glacial activity. It is essentially a type of inlet or estuary, often used to describe certain coastal features in the United …

firth (fɜːθ) or frith n (Physical Geography) a relatively narrow inlet of the sea, esp in Scotland [C15: from Old Norse fjörthr fiord]