BORD-AND-PILLAR


Meaning of BORD-AND-PILLAR in English

| ̷ ̷ ̷ ̷| ̷ ̷ ̷ ̷ adjective

: of or relating to a system of coal mining in which tunnels are driven in a checkerboard pattern having massive square pillars between them which are gradually cut away as the work proceeds

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.