English edit

Etymology edit

drill +‎ -able

Adjective edit

drillable (not comparable)

  1. Suitable for being drilled through.
    • 1977, J. G. Heacock, The Earth's Crust, page 243:
      For rocks at the surface or within drillable depths, observations are primarily geological in nature, and, in general, they indicate great complexity in structure and great spatial variation in composition.