What is the meaning of the word "social"?

Definitions:

composed of sociable people or formed for the purpose of sociability adjective
- a purely social club
living together or enjoying life in communities or organized groups adjective
- a human being is a social animal
marked by friendly companionship with others adjective
- a social cup of coffee
relating to human society and its members adjective
- social institutions
relating to or belonging to or characteristic of high society adjective
- We made fun of their being so social and hightoned.
tending to move or live together in groups or colonies of the same kind adjective
- ants are social insects