Part of clique becoming Canadian province (6)
I believe the answer is:
quebec
'canadian province' is the definition.
(Quebec is an example)
'part of clique becoming' is the wordplay.
'part of' indicates a hidden word.
'QUEBEC' is hidden within 'clique becoming'.
(Other definitions for quebec that I've seen before include "Comms code for Q" , "Province of eastern Canada, and its capital" , "Largest Canadian province" , "French-speaking Canadian provincial capital" , "French-speaking province of eastern Canada" .)