/əˈsem.bli/
a group of people, especially one that meets regularly for a particular purpose, such as government, or, more generally, the process of coming together, or the state of being together:
the United Nations General Assembly
She has been tipped as a future member of the Welsh Assembly.
a meeting in a school of several classes, usually at the beginning of the school day, to give information or to say prayers together:
All pupils are expected to attend school assembly.
There’s a religious assembly every morning.