鎖樋[kusaritoi] rain chain (hanging from a gutter and functioning as downspout, often made of ornamental cups)
伏樋[fusedoi] covered drain
雨樋[amadoi] drainspout
樋川[higawa] (water) spring

軒樋[nokidoi] rain gutter
竪樋[tatedoi] downpipe
呼び樋[yobidoi] elbow
樋殿[hidono] toilet