big tentnoun [ C ]
/ˌbɪɡ ˈtent//ˌbɪɡ ˈtent/mainly US specializeda political party or group that includes many different groups or ideas, and so can attract a wide range of supporters:
"The Republican Party is a big tent, " he said. "We have strong core beliefs that bring us together, but we can disagree about social issues."
big-tent
adjective [ before noun ] uk/ ˈbɪɡ ˌtent// ˈbɪɡ ˌtent/
We are a big-tent organization.