hoverer
/ˈhɒvərər/Definitions
1. noun
A person or thing that hovers, especially a person who habitually loiters or hangs about a place.
“The hoverer outside the store was causing a distraction to the customers.”
2. noun
A device, especially one on an aircraft, that enables it to hover in the air.
“The helicopter’s hoverer system allowed it to stay suspended in mid-air for several minutes.”