Drill pin

Related to Drill pin: twist bit
the pin in a lock which enters the hollow stem of the key.

See also: Drill

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
If you are sure the settling is done, it seems as if the simplest solution is to drill pins into the existing foundation (if there is room to do so) and lay a thin cement bed as a base for pavers, blue stones or whatever a competent mason deems feasible.