| 单词 | barrier-pillar |
| 释义 | > as lemmasbarrier-pillar barrier-pillar n. (see quots.). ΘΚΠ society > occupation and work > workplace > places where raw materials are extracted > mine > [noun] > pillar or area of unworked material forbar?15.. pillar1591 whole1728 stalch1747 post1793 stenting1812 rib1818 stook1826 man-of-war1835 spurn1837 staple1839 barrier1849 shaft pillar1855 barrier-pillar1881 stoop1881 stump1881 1881 Trans. Amer. Inst. Mining Engineers 1880–1 9 105 Barrier-pillars, pillars of coal, larger than ordinary, left at intervals to prevent too extensive crushing when the ground comes to be robbed. < as lemmas |
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