The Collaborative International Dictionary of English v.0.48:

Disbark \Dis*bark"\, v. t. [Pref. dis- + bark a small ship: cf.
   OF. desbarquer, F. d['e]barquer. Cf. Debark, Disembark.]
   To disembark. --Pope.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Disbark \Dis*bark"\, v. t. [Pref. dis- + bark rind.]
   To strip of bark; to bark. [R.] --Boyle.
   [1913 Webster]