The Collaborative International Dictionary of English v.0.48:

Pug nose \Pug" nose`\
   A short, thick nose; a snubnose. -- Pug"-nosed`, a.
   [1913 Webster]

   Pug-nose eel (Zool.), a deep-water marine eel (Simenchelys
      parasiticus) which sometimes burrows into the flesh of
      the halibut.
      [1913 Webster]