[crater] Birt is a bowl-shaped formation with a raised rim, slightly intersected along the southeast edge by the much smaller crater Birt A. To the west of Birt, a rille named Rima Birt runs north-northwest in an arc from Birt F to Birt E. ==Satellite craters== By convention these features are identified on lunar maps by placing the letter ...
Found on
http://en.wikipedia.org/wiki/Birt_(crater)

• (n.) A fish of the turbot kind; the brill.
Found on
http://thinkexist.com/dictionary/meaning/birt/
Birt (bẽrt)
noun [ Middle English
byrte ; confer French
bertonneau . Confer
Bret ,
Burt .]
(Zoology) A fish of the turbot kind; the brill. [ Written also
burt ,
bret , or
brut .] [ Prov. Eng.]
Found on
http://www.encyclo.co.uk/webster/B/56
No exact match found.