D defs.my
Entry 3 senses Webster, 1913

Boring

/bôr'-ĭng/ · Bor·ing · IPA /ˈboɹ.ɪŋ/
01 n. The act or process of one who, or that which, bores; as, the boring of cannon; the boring of piles and ship timbers by certain marine mollusks.
  1. 1.
    The act or process of one who, or that which, bores; as, the boring of cannon; the boring of piles and ship timbers by certain marine mollusks.
    “One of the most important applications of boring is in the formation of artesian wells.” — Tomlinson.
  2. 2.
    A hole made by boring.
  3. 3.
    The chips or fragments made by boring.
Phrases & compounds
Boring bar — a revolving or stationary bar, carrying one or more cutting tools for dressing round holes.
Boring tool — a cutting tool placed in a cutter head to dress round holes.