The Collaborative International Dictionary of English v.0.48:

Transire \Trans*i"re\, n. [L. transire to pass through or
   across, to pass.] (End. Law)
   A customhouse clearance for a coasting vessel; a permit.
   [1913 Webster]

Bouvier's Law Dictionary, Revised 6th Ed (1856):

TRANSIRE, Eng. law. A warrant for the custom-house to let goods pass: a
permit. (q.v.) See, for a form of a transire, Harg. L. Tr. 104.