A "drainpipe" refers to a hollow tube or pipe that is used to carry away excess liquids, typically water, from a certain area or object, such as from a roof or a sink. Full definition
Make some tunnels out of drainpipes or terracotta chimney liners. (supremepetfoods.com)
Dental plaque and the viscous brown slime in drainpipes are two familiar examples of bacterial biofilms. (sciencedaily.com)
Other styles include drainpipe jeans with a straight, tight leg and carrot or tapered jeans that are looser around the buttocks and taper down tightly towards the ankle. (rebelle.com)