Frith

1. a. A small field taken out of a common, by inclosing it; an inclosure.
2. n. A narrow arm of the sea; an estuary; the opening of a river into the sea; as, the Frith of Forth.
3. n. A kind of weir for catching fish.
4. a. A forest; a woody place.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.