Forstner bit

or Foerstner bit

[ fawrst-ner ]
/ ˈfɔrst nər /

noun Carpentry.

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