Depone (d&euptack_;pōn), v. t. [imp. & p. p. Deponed (-pōnd); p. pr. & vb. n. Deponing.] [L. deponere, depositum, to put down, in LL., to assert under oath; de- + ponere to put, place. See Position, and cf. Deposit.] 1. To lay, as a stake; to wager. [Obs.] Hudibras.
[1913 Webster]

2. To lay down. [R.] Southey.
[1913 Webster]

3. To assert under oath; to depose. [A Scotticism]
[1913 Webster]

Sprot deponeth that he entered himself thereafter in conference. State Trials(1606).
[1913 Webster]