a tunnel that carries a river or a pipe for water under a road 涵(洞);(道路下面的)排水管 Culverts ran the entire length of the building. 涵洞贯穿了整栋建筑。 The culvert seemed to be disused and silted up with debris. 涵洞似乎被废弃了,被碎片堵塞了。
Word Originlate 18th cent.: of unknown origin.