| 单词 | culvert-bricks |
| 释义 | > as lemmasculvert-bricks Used from c1770 in connection with canal construction; thence extended to railways, highways, town-drainage, etc. In connection with railways and highways, it is sometimes disputed whether a particular structure is a ‘culvert’ or a ‘bridge’. The essential purpose of a bridge, however, is to carry a road at a desired height over a river and its channel, a chasm, or the like; that of a culvert to afford a passage for a small crossing stream under the embankment of a railway or highway, or beneath a road where the configuration of the surface does not require a bridge. Locally, the term ‘culvert’ is often limited to a barrel drain, bricks shaped for which are known as culvert-bricks. See Notes & Queries, 8th Ser. III. 248, 377.extracted from culvertn.< as lemmas |
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