social meaning
EN
[səʊʃl̩] [-əʊʃəl] 
US WSocial
- The term social refers to a characteristic of living organisms as applied to populations of humans and other animals.
FR social 
- NounPLsocialsSUF-ial
- A festive gathering to foster introductions.
- They organized a social at the dance club to get people to know each other.
- (Canadian Prairies) A dance held to raise money for a couple to be married.
- (Britain, colloquial) (With definite article) Abbreviation of social security, referring to the UK state welfare system, or of related terms such as Social Security Office or Social Security Benefit.
- Fred hated going down to the social to sign on.
- (US, colloquial) Abbreviation of social security number.
- What's your social?
- (dated, Ireland) A dinner dance event, usually held annually by a company or sporting club.
- A festive gathering to foster introductions.
- AdjectiveCOMmore socialSUPmost social
- Being extroverted or outgoing.
- James is a very social guy; he knows lots of people.
- Of or relating to society.
- Phoenix and Lubbock are both caught in severe drought, and it is going to get much worse. We may see many such [dust] storms in the decades ahead, along with species extinctions, radical disturbance of ecosystems, and intensified social conflict over land and water. Welcome to the Anthropocene, the epoch when humans have become a major geological and climatic force.
- (Internet) Relating to social media or social networks.
- social gaming
- (rare) Relating to a nation's allies (compare the Social War).
- (botany, zoology) Cooperating or growing in groups.
- a social insect
- Being extroverted or outgoing.
- More Examples
- Used in the Middle of Sentence
- "They all say they like to fish, too," says Sandi. Well, this could revolutionize Park Cities social life, fershur.
- John found that starting up his own business empowered him greatly in social situations.
- The aspect which attracts me to the idea of anthropomorphs *is* their differences from humans, particularly in the ways it shapes their social behavior.
- Used in the Beginning of Sentence
- Social psychology is a subdiscipline of psychology.
- Social security is the third rail of American politics: touch it and your political career dies.
- Social mobility is often closely bound up with socio-economic status.
- Used in the Middle of Sentence
Definition of social in English Dictionary
- Part-of-Speech Hierarchy
- Adjectives
- Nouns
- Countable nouns
- Countable nouns
- Adjectives
Source: Wiktionary
Grammatically, this word "social" is an adjective. It's also a noun, more specifically, a countable noun.