lofthead
English
editEtymology
editNoun
editlofthead (plural loftheads)
- (obsolete, rare) An overhead cavity in a cave or mineshaft caused by a fall of roof.
- 1880, Transactions of the Manchester Geological Society:
- If a certain vacant space is left above the timbering of a road, it often affords a lodgment for gas, and it is by no means easy to ventilate such a space, or, as it is often called, a "lofthead," in all cases.
References
edit- United States Bureau of Mines, Dictionary of Mining, Mineral, and Related Terms (1996).