De·pone v. t. [imp. & p. p. Deponed p. pr. & vb. n. Deponing.]
  1. To lay, as a stake; to wager. [Obs.]
  2. To lay down. [R.]
  3. To assert under oath; to depose. [A Scotticism]
     Sprot deponeth that he entered himself thereafter in conference.   --State Trials(1606).