v (intransitive|of an object) To join (to another object): to attach, or to be intended to attach or capable of attaching, to another object.
v (intransitive|of two objects) To join: to attach, or to be intended to attach or capable of attaching, to each other.
v (transitive|of an object) To join (two other objects), or to join (one object) to (another object): to be a link between two objects, thereby attaching them to each other.
v (transitive|of a person) To join (two other objects), or to join (one object) to (another object): to take one object and attach it to another.