The Collaborative International Dictionary of English v.0.48:

Tolbooth \Tol"booth`\, n.
   See Tollbooth.
   [1913 Webster]

WordNet (r) 3.0 (2006):

tolbooth
    n 1: a booth at a tollgate where the toll collector collects
         tolls [syn: tollbooth, tolbooth, tollhouse]