The Collaborative International Dictionary of English v.0.48:

Gula \Gu"la\, n.; pl. L. Gulae, E. Gulas. [L., the throat,
   gullet.]
   1. (Zool.)
      (a) The upper front of the neck, next to the chin; the
          upper throat.
      (b) A plate which in most insects supports the submentum.
          [1913 Webster]

   2. (Arch.) A capping molding. Same as Cymatium.
      [1913 Webster]