Source : Webster's Revised Unabridged Dictionary (1913)

Pinion \Pin"ion\, v. t. [imp. & p. p. {Pinioned}; p. pr. & vb.
   n. {Pinioning}.]
   1. To bind or confine the wings of; to confine by binding the
      wings. --Bacon.

   2. To disable by cutting off the pinion joint. --Johnson.

   3. To disable or restrain, as a person, by binding the arms,
      esp. by binding the arms to the body. --Shak.

            Her elbows pinioned close upon her hips. --Cowper.

   4. Hence, generally, to confine; to bind; to tie up.
      ``Pinioned up by formal rules of state.'' --Norris.

Pinioned \Pin"ioned\, a.
   Having wings or pinions.

Source : WordNet®

pinioned
     adj 1: (of birds) especially having the flight feathers
     2: bound fast especially having the arms restrained