/ Dictionary / Index T toolhead: Meaning and Definition of Find definitions for: tool•head Pronunciation: (tl'hed"), [key] — n. Mach. a toolholder that is attached to a machine tool and can be adjusted to orient the tool in various positions. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tool engineering toolholder Related Content Daily Word Quiz: hale Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language