from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The part of a drilling tool or machine that holds the shank of a drill or bit.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The part of a drill that holds the shank of the bit
from the GNU version of the Collaborative International Dictionary of English
- n. A contrivance for holding and turning a drill.
from The Century Dictionary and Cyclopedia
- n. In mech., the holder (of which there are many kinds) for receiving the fixed end of a drill.
Sorry, no etymologies found.