dipheading
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diphead — ˈ ̷ ̷ˌ ̷ ̷ noun also dipheading ˈ ̷ ̷ˌ ̷ ̷ ̷ ̷ : a drift inclined along the dip of a coal seam … Useful english dictionary
diphead — ˈ ̷ ̷ˌ ̷ ̷ noun also dipheading ˈ ̷ ̷ˌ ̷ ̷ ̷ ̷ : a drift inclined along the dip of a coal seam … Useful english dictionary