sparger

from The Collaborative International Dictionary of English v.0.48

Sparger \Spar"ger\, n. [Cf. F. asperger to sprinkle, L.
   aspergere, spargere.]
   A vessel with a perforated cover, for sprinkling with a
   liquid; a sprinkler.
   [1913 Webster]
   [1913 Webster]