or Foerstner bit
[ fawrst-ner ]
/ ˈfɔrst nər /
a bit for drilling blind holes, guided from the rim rather than from the center to permit it to enter the wood at an oblique angle.
Origin of Forstner bit
First recorded in 1900–05; after Benjamin Forstner, its inventor
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019