1) Agricultural machinery 2) Crop duster 3) Device for an arborist 4) Exterminator, often 5) Hose attachment 6) Jack 7) Laborer 8) Labourer 9) Manual laborer 10) Mister 11) One with a bug gun 12) Paint gun 13) Piece of yard care equipment 14) Skunk, at times 1) Airbrush 2) Atomiser 3) Atomizer 4) Hose 
A sprayer is a device used to spray a liquid. In agriculture, a sprayer is a piece of equipment that spray nozzles to apply herbicides, pesticides, and fertilizers to agricultural crops. Sprayers range in size from man-portable units (typically backpacks with spray guns) to trailed sprayers that are connected to a tractor, to self-propelled units ...
• (n.) One that sprays; any instrument for vaporizing and spraying liquids.
element of an induction heater used for cooling the charge
Apparatus for applying pesticide sprays.
Spray'er noun One that sprays; any instrument for vaporizing and spraying liquids. 
[n] - a worker who applies spray to a surface
A term used for an implement used for applying pesticides or liquid fertiliser to crops. Generally nozzles convert liquid under pressure to droplets
noun a worker who applies spray to a surface