资料来源 : Webster's Revised Unabridged Dictionary (1913)

   {Tooth powder}, a powder for cleaning the teeth; a
      dentifrice.

   {Tooth rash}. (Med.) See {Red-gum}, 1.

   {To show the teeth}, to threaten. ``When the Law shows her
      teeth, but dares not bite.'' --Young.

   {To the teeth}, in open opposition; directly to one's face.
      ``That I shall live, and tell him to his teeth .'' --Shak.

Rash \Rash\, n. [OF. rashe an eruption, scurf, F. rache; fr.
   (assumed) LL. rasicare to scratch, fr. L. radere, rasum, to
   scrape, scratch, shave. See {Rase}, and cf. {Rascal}.] (Med.)
   A fine eruption or efflorescence on the body, with little or
   no elevation.

   {Canker rash}. See in the Vocabulary.

   {Nettle rash}. See {Urticaria}.

   {Rose rash}. See {Roseola}.

   {Tooth rash}. See {Red-gum}.