(かん)

かん
noun
pipe, tube
tool
1. pipe, tube, duct
A hollow cylinder used for conveying fluids, gases, or as a structural component.
Water is leaking from the old pipe.
The sewer pipe got clogged.

(かん) refers to a hollow cylindrical object — a pipe, tube, or duct. Used both as a standalone word and as a suffix in compounds.

Compounds

CONTRAST WITH パイプ:
パイプ (from English 'pipe') is used more casually and can also refer to smoking pipes or connections/channels (パイプ(やく) = go-between). (かん) is more technical and appears mainly in compound words.

Related kanji compounds