The Collaborative International Dictionary of English v.0.48:

Playbill \Play"bill`\, n.
   A printed programme of a play, with the parts assigned to the
   actors.
   [1913 Webster]

WordNet (r) 3.0 (2006):

playbill
    n 1: a theatrical program; "he couldn't find her name on the
         playbill"

Moby Thesaurus II by Grady Ward, 1.0:

21 Moby Thesaurus words for "playbill":
   agenda, batting order, bill, bill of fare, blueprint, budget,
   calendar, card, carte du jour, docket, lineup, list of agenda,
   menu, program, program of operation, programma, prospectus,
   protocol, roster, schedule, slate