Found 2 items, similar to aerator.
English → English (WordNet) Definition: aerator aerator n : an apparatus for exposing something to the air (as sewage)
English → English (gcide) Definition: aerator 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]