In various technical uses. Mechanics. The plate in which the butt end of a breast drill is inserted, and against which pressure is applied by the…
| 单词 | θ212298 |
| 释义 | society > occupation and work > equipment > piercing or boring tools > [noun] > drill > breast-drills > part of (3) breastplate1678 In various technical uses. Mechanics. The plate in which the butt end of a breast drill is inserted, and against which pressure is applied by the… conscience1856 Mechanics. = breastplate, n. 3d. Obsolete. palette1875 The breastplate of a hand-drill. Obsolete. rare. |
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