WordNet (r) 3.0 (2006):

cover charge
    n 1: a fixed charge by a restaurant or nightclub over and above
         the charge for food and drink [syn: cover charge,
         cover]

Moby Thesaurus II by Grady Ward, 1.0:

36 Moby Thesaurus words for "cover charge":
   American plan, European plan, a la carte, admission, admission fee,
   anchorage, brokerage, carfare, cellarage, charge, charges, couvert,
   cover, demand, dockage, dues, entrance fee, exaction, exactment,
   fare, fee, hire, license fee, ordinary, pilotage, portage, salvage,
   scot, scot and lot, self-service, service, shot, storage, toll,
   towage, wharfage