Source : Webster's Revised Unabridged Dictionary (1913)

Trilling \Tril"ling\, n. [Cf. G. drilling.]
   1. One of tree children born at the same birth. --Wright.

   2. (Crystallog.) A compound crystal, consisting of three
      individuals.

Trill \Trill\, v. t. [imp. & p. p. {Trilled}; p. pr. & vb. n.
   {Trilling}.] [It. trillare; probably of imitative origin.]
   To impart the quality of a trill to; to utter as, or with, a
   trill; as, to trill the r; to trill a note.

         The sober-suited songstress trills her lay. --Thomson.

Source : WordNet®

Trilling
     n : United States literary critic (1905-1975) [syn: {Lionel
         Trilling}]