Source : Webster's Revised Unabridged Dictionary (1913)

Impanel \Im*pan"el\, v. t. [imp. & p. p. {Impaneled}or
   {Impanelled}; p. pr. & vb. n. {Impaneling} or {Impanelling}.]
   [Pref. im- in + panel. Cf. {Empanel}.] [Written also
   {empanel}.]
   To enter in a list, or on a piece of parchment, called a
   panel; to form or enroll, as a list of jurors in a court of
   justice. --Blackstone.