noun

1. Rare a convening or being convened
2. 1. an assembly, often periodical, of members or delegates, as of a political, social, professional, or religious group
   2. the members or delegates at such an assembly
   3. in the U.S., an official gathering of delegates of one party to select candidates for office, formulate party policies, etc.
3. 1. an agreement between persons, nations, etc. a copyright convention; the Geneva Convention
   2. general agreement on the usages and practices of social life bohemian revolt against convention
4. 1. a customary practice, rule, method, etc.; usage the soliloquy was an Elizabethan dramatic convention
   2. Card Games a bid or play understood by partners to have a special meaning when made by either of them

Etymology: ME convencioun < L conventio < pp. of convenire, convene