transitive. To prop up or sustain (esp. coal in a mine) with a sprag or sprags.
单词 | θ209896 |
释义 | society > occupation and work > industry > building or constructing > constructing or working with wood > work with wood [verb (intransitive)] > prop up with pieces of wood (1) sprag1841 transitive. To prop up or sustain (esp. coal in a mine) with a sprag or sprags. |
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