Definitions of social:

• noun:   a party of people assembled to promote sociability and communal activity
• adjective:   living together or enjoying life in communities or organized groups

  Example: "Human beings are social animals"

• adjective:   composed of sociable people or formed for the purpose of sociability

  Example: "A purely social club"

• adjective:   relating to human society and its members

  Example: "Social institutions"

• adjective:   relating to or belonging to or characteristic of high society

  Example: "Made fun of her being so social and high-toned"

• adjective:   marked by friendly companionship with others

  Example: "A social cup of coffee"

• adjective:   (of birds and animals) tending to move or live together in groups or colonies of the same kind

  Example: "Ants are social insects"