estuary Meaning, Definition & Usage

  1. noun the wide part of a river where it nears the sea; fresh and salt water mix

WordNet

Es"tu*a*ry noun
Etymology
L. aestuarium, from aestuare to surge. See Estuate.
Wordforms
plural Estuaries
Definitions
  1. A place where water boils up; a spring that wells forth. Obs. Boyle.
  2. A passage, as the mouth of a river or lake, where the tide meets the current; an arm of the sea; a frith.
    it to the sea was often by long and wide estuaries. Dana.
Es"tu*a*ry adjective
Definitions
  1. Belonging to, or formed in, an estuary; as, estuary strata. Lyell.

Webster 1913