The Collaborative International Dictionary of English v.0.48:

Laryngoscope \La*ryn"go*scope\, n. [Larynx + -scope.]
   1. (Surg.) An instrument, consisting of an arrangement of two
      mirrors, for reflecting light upon the larynx, and for
      examining its image. [Archaic]
      [1913 Webster]

   2. (Med.) A type of endoscope having a light source and
      lenses, permitting theviewing of a magnified image of the
      larynx. It may be flexible or rigid.
      [PJC]

WordNet (r) 3.0 (2006):

laryngoscope
    n 1: a medical instrument for examining the larynx