Aerator

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  aerator \aerator\, Aerator \A"["e]r*a`tor\, n.
     1. That which supplies with air or gas; specif.:
        (a) An apparatus used for charging mineral waters with gas
            and in making soda water.
        (b) A fumigator used to bleach grain, destroying fungi and
            insects.


            [Webster 1913 Suppl.]
  
     2. an apparatus for exposing something to the air (as
        sewage).
        [WordNet 1.5] Aerenchym

From WordNet (r) 2.0 [wn]:

  aerator
       n : an apparatus for exposing something to the air (as sewage)