covered drain; culvert
Refers to a drain or water channel that is covered, often underground or beneath a surface, used in construction or civil engineering contexts.
A covered drain is installed under the road to carry rainwater.
Standard kanji spelling for a covered drain or culvert.
Variant spelling omitting the okurigana せ; less common but still encountered.
Compound of 伏せ (fuse, 'covered' or 'hidden') and 樋 (doi, 'conduit' or 'pipe'). The spelling 伏樋 is a variant without okurigana.