Group (online social networking)
WordNet
noun
(1) Any number of entities (members) considered as a unit
(2) A set that is closed, associative, has an identity element and every element has an inverse
(3) (chemistry) two or more atoms bound together as a single unit and forming part of a molecule
verb
(4) Arrange into a group or groups
"Can you group these shapes together?"
(5) Form a group or group together