/ Dictionary / Index T teething: Meaning and Definition of Find definitions for: teeth•ing Pronunciation: (tē'ing), [key] — n. Dentistry. eruption of the deciduous teeth, esp. the phenomena associated with their eruption. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: teething (Thesaurus) teeth grinding teething ring Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language