(MEETING) [noun] [C] - a large formal meeting for a group of people who do a particular job or who have a similar interest, or for a political partythe annual pig breeders' conventiona convention of stamp collectorsthe national Democratic conventionThey're using that hall to hold their party convention.
CONVENTION
Meaning of CONVENTION in English
Cambridge English vocab. Кембриджский английский словарь. 2012