adamantine drill
noun
: a tubular well-drilling bit with hardened steel shot that revolve under the rim of the rotating tube
Word History
First Known Use
circa 1904, in the meaning defined above
- Knight Templar
- knight's fee
- knight's service
- knight's tour
- knight's-spur
- knight's-spurs
- knight's-star
- knight's-star lilies
- knight's-star lily
- knight's-stars
- knight-companion
- knight-companions
- knight-errant
- knight-errantries
- knight-errantry
- knightage
- knightages
- knighted
- knightess
- knightfully
- knighthead
- knightheads
- knighthood
- knighthood-errant
- knighthoods