The Collaborative International Dictionary of English v.0.48:

Tollgate \Toll"gate`\, n.
   A gate where toll is taken.
   [1913 Webster]

WordNet (r) 3.0 (2006):

tollgate
    n 1: a gate or bar across a toll bridge or toll road which is
         lifted when the toll is paid [syn: tollgate, tollbar]

Moby Thesaurus II by Grady Ward, 1.0:

34 Moby Thesaurus words for "tollgate":
   French door, archway, back door, barway, bulkhead,
   carriage entrance, cellar door, cellarway, door, doorjamb,
   doorpost, doorway, front door, gate, gatepost, gateway, hatch,
   hatchway, lintel, porch, portal, porte cochere, postern,
   propylaeum, pylon, scuttle, side door, stile, storm door,
   threshold, trap, trap door, turnpike, turnstile