pillaring


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Related to pillaring: pillorying

pillaring

[′pil·ə·riŋ]
(mining engineering)
The process of extracting pillars. Also called pillar robbing; pulling pillars; robbing pillars.
(ordnance)
The rapid vertical movement of smoke which sometimes results, for instance, from the explosion of a white phosphorus bomb or projectile; the effect is undesirable because it does not produce obscuration over a desirably large area.