chute
A sloped tube or channel that things slide down quickly.
A chute (rhymes with “boot”) is a sloped channel or tube that things slide down quickly. At a water park, you zoom down a water chute into the pool below. In old apartment buildings, garbage chutes let residents drop trash bags from their floor straight down to a collection bin in the basement. Coal miners once used chutes to send coal sliding down from mines to waiting train cars.
A laundry chute lets you drop dirty clothes from an upstairs bathroom straight to the laundry room. Firefighters sometimes escape burning buildings by sliding down emergency chutes instead of taking the stairs.
The most dramatic kind of chute is a parachute, which slows your fall through the air. You might also hear someone say “pull the chute” as slang for escaping a bad situation quickly, borrowed from skydivers who yank their parachute cords.
Notice that chute sounds exactly like shoot but means something different. If you're writing about sliding down something, you want chute. If you're writing about launching or firing something, you want shoot.