tongue-tie

from WordNet (r) 3.0 (2006)

tongue-tie
    v 1: deprive of speech; "When he met his idol, the young man was
         tongue-tied"

from The Collaborative International Dictionary of English v.0.48

Tongue-tie \Tongue"-tie`\, n. (Med.)
   Impeded motion of the tongue because of the shortness of the
   fraenum, or of the adhesion of its margins to the gums.
   --Dunglison.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Tongue-tie \Tongue"-tie`\, v. t.
   To deprive of speech or the power of speech, or of distinct
   articulation.
   [1913 Webster]

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