drainpipe

1. (uncountable) The type of pipe that is used to construct a drainpipe.Examples: "Hold a length of drainpipe vertically and stuff a loose wad of metal gauze up into the lower end."; ". Buy enough unperforated, rigid plastic drainpipe for the job at a building supply center; also buy a 90-degree drainpipe elbow, drainpipe couplings, and any adapter available to join the drainpipe and downspout."; "Tangled in the bushes we found a rusty length of drainpipe; we fastened it to the tree and made a kind of big nest above in the branches and spent a lot of time scrambling up and down the tree into the nest and hollering secret coded messages into the drainpipe to a comrade below."uncountable