adj.
 engaging readily with other people. 
▸marked by friendliness.
n.
    - historical an open carriage with facing side seats.
- historical a tricycle with two seats side by side.
- chiefly Brit. an S-shaped couch for two people who sit partially facing each other.
- US dated an informal social gathering.
Derivative
  
    - sociability n.
- sociableness n.
- sociably adv.
 
  Etymology
  C16: from Fr., or from L. sociabilis, from sociare ‘unite’, from socius ‘companion’.