[ furth ]
/ fɜrθ /

noun Chiefly Scot.

a long, narrow indentation of the seacoast.
Also frith.

Origin of firth

1400–50; late Middle English (Scots) < Old Norse firth-, stem of fjǫrthr fjord

Definition for firth (2 of 2)


[ furth ]
/ fɜrθ /


John Rupert,1890–1960, English linguist.

Related forms

Firth·i·an, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for firth

British Dictionary definitions for firth



/ (fɜːθ) /


a relatively narrow inlet of the sea, esp in Scotland

Word Origin for firth

C15: from Old Norse fjörthr fiord
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for firth


[ fûrth ]

A long, narrow inlet of the sea. Firths are usually the lower part of an estuary, but are sometimes fjords.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.