A quintuple combination pumper or quint is a

fire-fighting Firefighting is the act of extinguishing or preventing the spread of unwanted fires from threatening human lives and destroying property and the environment. A person who engages in firefighting is known as a firefighter. Firefighters typicall ...

apparatus that serves the dual purpose of an

engine An engine or motor is a machine designed to convert one or more forms of energy into mechanical energy. Available energy sources include potential energy (e.g. energy of the Earth's gravitational field as exploited in hydroelectric power gen ...

and a

ladder truck A fire engine (also known in some places as a fire truck or fire lorry) is a road vehicle (usually a truck) that functions as a firefighting apparatus. The primary purposes of a fire engine include transporting firefighters and water to an ...

. “Quintuple” refers to the five functions that a quint provides - pump, water tank,

fire hose A fire hose (or firehose) is a high-pressure hose that carries water or other fire retardant (such as foam) to a fire to extinguish it. Outdoors, it attaches either to a fire engine, fire hydrant, or a portable fire pump. Indoors, it can perma ...

, aerial device, and ground ladders. Also, Tillers, Tractor Drawn Aerials, also have quint features. These were dubbed,"Quillers."

References

*https://docs.google.com/spreadsheets/d/14DxY_wUN7hAlDwpGZLsPwC_IZP-x-eXFOzaIccvtwBM/edit?usp=sharing spreadsheet listing fire departments in USA with multiple quints * {{DEFAULTSORT:Quint (Fire Apparatus) Fire service vehicles da:Drejestige#Quint