The Collaborative International Dictionary of English v.0.48:

Briny \Brin"y\, a. [From Brine.]
   Of or pertaining to brine, or to the sea; partaking of the
   nature of brine; salt; as, a briny taste; the briny flood.
   [1913 Webster]

WordNet (r) 3.0 (2006):

briny
    adj 1: slightly salty (especially from containing a mixture of
           seawater and fresh water); "a brackish lagoon"; "the
           briny deep" [syn: brackish, briny]
    n 1: any very large body of (salt) water [syn: main, briny]