暗渠[ankyo] subterranean drain
渠魁[kyokai] ringleader
溝渠[koukyo] ditch
出渠[shukkyo] leaving the (repair) dock
入渠[nyuukyo] entering a dock

函渠[kankyo] drain with an oblong cross-section
乾船渠[kansenkyo] dry dock
船渠[senkyo] dock
暗渠排水[ankyohaisui] underdrainage
合流渠[gouryuukyo] combined sewer

只管[hitasura] nothing but
ブラウン管[buraunkan] cathode-ray tube
為替管理[kawasekanri] exchange control
移管[ikan] transfer of control
一管[ikkan] one flute

陰極線管[inkyokusenkan] cathode-ray tube
烟管[enkan] kiseru
煙管[kiseru] (tobacco) pipe with metal tipped stem
鉛管[enkan] lead pipe
下水管[gesuikan] sewer pipe