A festive gathering to foster introductions.

(Canadian Prairies) A dance held to raise money, often held for a couple to be married.

(Britain, colloquial, with definite article) Ellipsis of social security.

(US, colloquial) Ellipsis of social security number.

(dated, Ireland) A dinner dance event, usually held annually by a company or sporting club.

(Canada) Ellipsis of social studies.

(Internet, informal, uncountable) Ellipsis of social media.

(Internet, informal, countable) A social media account.

Being extroverted or outgoing.

Of or relating to society.

(Internet) Relating to social media or social networks.

(rare) Relating to a nation's allies.

(botany, zoology) Cooperating or growing in groups.