fogger

noun

1. The outlet at the end of a hose which is designed to atomize, spray, or mist the contents flowing through the hose. Typical use includes gaseous materials such as nitrous oxide in automotive applications, as well as fuels for turbine engines.
2. A device that generates artificial fog or smoke for stage performances.
3. A device that releases an insecticidal mist.
4. (obsolete)One who fogs; a pettifogger.

   “A beggarly fogger.”

   “But then I had the [massive] flintlock by me for protection. ¶[…]The linen-press and a chest on the top of it formed, however, a very good gun-carriage; and, thus mounted, aim could be taken out of the window[…], and a 'bead' could be drawn upon Molly, the dairymaid, kissing the fogger behind the hedge, little dreaming that the deadly tube was levelled at them.”

5. A person employed to feed cattle.

   “Describing a fogger's (cattle feeder) work on a winter day, he concludes that […]”