sinkhole
n.
also sink-hole, mid-15c., "sewage pit," from sink, n. + hole, n.. As a geological phenomenon, "hole made in the earth in limestone regions by underground erosion," 1780, from sink, v..
| 词汇 | sinkhole |
| 词根词缀 | Online Etymology Dictionary sinkhole n. also sink-hole, mid-15c., "sewage pit," from sink, n. + hole, n.. As a geological phenomenon, "hole made in the earth in limestone regions by underground erosion," 1780, from sink, v.. |
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