We don't have synonyms for tentpole yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are venthole, tent pole and tent-pole.
(n) :
(US, attributive, figurative, film, television, theater) A large-scale entertainment production that is a major source of revenue for its studio, television network, or investors.
(v) :
(broadcasting) To schedule a popular programme between two newer or less popular ones in the hope that viewers will watch them.
(n) :
(US, attributive, figurative, film, television, theater) A large-scale entertainment production that is a major source of revenue for its studio, television network, or investors.
(v) :
(broadcasting) To schedule a popular programme between two newer or less popular ones in the hope that viewers will watch them.