IPA: /ˈpleɪbɪl/
KK: /ˈpleɪˌbɪl/
A printed piece of paper that provides information about a theatrical performance, including details about the play, the cast, and other relevant information.
I picked up a playbill at the theater to learn more about the show and the actors.
Playbill → It is formed from "play" (from Old English *plegian*, meaning to engage in activity or amusement) and "bill" (from Old French *billet*, meaning a written notice or document). A playbill is a written notice that provides information about a theatrical performance.
Think of 'engaging in activity' ('play') and a 'written notice' ('bill') — a playbill is a document that tells you about a performance.