convention-n; 5 Senses

Sense Number 1: an assembly

Commentary: CONVENTION[+event] A large, typically formal assembly.

The Republican National Convention is being held in Philadelphia this year.
John went to a comic book convention dressed as The Flash.
The Constitutional Convention essentially created the United States as we know it.
The convention broke down into a riot after everyone had enjoyed a few beers.
The convention lasted for days.

WordNet 2.0 Sense Numbers: 1

Sense Number 2: forming an assembly

Commentary: CONVENTION[+event] The act of convening or coming together into a group. Probably a rare sense.

The first convention of our assembly took place on January 14, 1919.
I find that the convention of two quarreling people is an important step in conflict resolution.

WordNet 2.0 Sense Numbers: 5

Sense Number 3: normal example

Commentary: Something regarded as normal; a pattern, rule, or formula. Something that has been done before, or the expectations of a community.

Having a nameless narrator is a common literary convention.
John went against fashion conventions by wearing a bowtie to class.
The mores of a society are the conventions that express its fundamental values.
There are certain conventions that make it easier to read Java code.

WordNet 2.0 Sense Numbers: 2

Sense Number 4: international agreement

Commentary: A diplomatic agreement that a number of countries have ratified.

The Bush Administration has called the Geneva Convention, which protects prisoners from inhumane treatment, "old-fashioned".
The United Nations promoted the Chemical Weapons Convention to limit the stockpiling of toxic substances.

WordNet 2.0 Sense Numbers: 3

Sense Number 5: being conventional

Commentary: Conventionality or conformity; the orthodoxy that comes as a result of being conventional or normal. A quality that a person or a thing can have. Probably a rare usage.

I thought of myself as a person of convention.

WordNet 2.0 Sense Numbers: 4