The Collaborative International Dictionary of English v.0.48:

Tarre \Tarre\, v. t. [OE. tarien, terien, to irritate, provoke,
   AS. tergan to pull, pluck, torment; probably akin to E. tear,
   v. t. [root]63. Cf. Tarry, v.]
   To set on, as a dog; to incite. [Obs.] --Shak.
   [1913 Webster]