(See quot.)
1670. Pettus, Fodinæ Reg., Gloss. s.v., Boles or Bolestids are places, where in ancient time (before Smelting Mills were invented) the Miners did fine their lead.
1783. S. Pegge, in Archaeologia, (1785), VII. 170 (D.). There was a bole, by which is meant a place where in ancient times, before smelting mills were invented, miners used to smelt their lead ores.