The Collaborative International Dictionary of English v.0.48:

Te-hee \Te-hee"\, n. & interj.
   A tittering laugh; a titter. "'Te-hee,' quoth she."
   --Chaucer.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Te-hee \Te-hee"\, v. i.
   To titter; to laugh derisively.
   [1913 Webster]

         She cried, "Come, come; you must not look grave upon
         me." Upon this, I te-heed.               --Madame
                                                  D'Arblay.
   [1913 Webster]