The Collaborative International Dictionary of English v.0.48:

Tapish \Tap"ish\, v. i. [F. se tapir to squat.]
   To lie close to the ground, so as to be concealed; to squat;
   to crouch; hence, to hide one's self. [Written also tappis,
   tappish, tappice.] [Obs. or Prov. Eng.]
   [1913 Webster]

         As a hound that, having roused a hart,
         Although he tappish ne'er so soft.       --Chapman.
   [1913 Webster]