Firth

• POS: Noun

CIDE DICTIONARY

Firth, n. [Scot. See Frith.].

 An arm of the sea; a frith.  [1913 Webster]

OXFORD DICTIONARY

Firth, n. (also frith)
1 a narrow inlet of the sea.
2 an estuary.

Etymology

ME (orig. Sc.) f. ON fj{ouml}rthr FIORD

THESAURUS

Firth

arm, armlet, bay, bayou, belt, bight, boca, cove, creek, estuary, euripus, fjord, frith, gulf, gut, harbor, inlet, kyle, loch, mouth, narrow, narrow seas, narrows, natural harbor, reach, road, roads, roadstead, sound, strait, straits

ROGET THESAURUS

Firth

Lake

N gulf, lake, land covered with water, gulf, gulph, bay, inlet, bight, estuary, arm of the sea, bayou, fiord, armlet, frith, firth, ostiary, mouth, lagune, lagoon, indraught, cove, creek, natural harbor, roads, strait, narrows, Euripus, sound, belt, gut, kyles, continental slope, continental shelf, lake, loch, lough, mere, tarn, plash, broad, pond, pool, lin, puddle, slab, well, artesian well, standing water, dead water, sheet of water, fish pond, mill pond, ditch, dike, dyke, dam, reservoir, alberca, barachois, hog wallow, lacustrine.