涵闸 hánzhá sluices and culverts Origin Definitions Defs Strokes Stroke Words Sentences Sents 涵 hán culvert (bound form) a culvert, which is a pipe or tunnel that allows water to flow under a road or railroad; a shortened form of 涵洞 hándòng闸 閘 zhá noun sluice gate (bound form) sluice gate; floodgate; a water control facility used to adjust water flow; formerly a river tax station