[? f. TICK sb.3 + HOLE sb.] A cavity in nodular stone, usually lined with a crystalline incrustation.
1829. Glover’s Hist. Derby, I. 92. At the lime-quarries, Mill-town, Ashover, cavities or tick-holes are frequent in the … limestone rock,… lined with … quartz crystals.
1881. in Raymond, Mining Gloss.
