'Teething' definitions:

Definition of 'teething'

(from WordNet)
noun
The eruption through the gums of baby teeth [syn: teething, dentition, odontiasis]

Definition of 'Teething'

From: GCIDE
  • Teeth \Teeth\, v. i. [imp. & p. p. Teethed; p. pr. & vb. n. Teething.] To breed, or grow, teeth. [1913 Webster]

Definition of 'Teething'

From: GCIDE
  • Teething \Teeth"ing\, n. The process of the first growth of teeth, or the phenomena attending their issue through the gums; dentition. [1913 Webster]