A useful friend or associate.
A drug dealer.
To join an electrical or telephone line to a circuit or network.
To make a travel connection; to switch from one means of transport to another as part of the same trip.
To join (to another object): to attach, or to be intended to attach or capable of attaching, to another object.
To join: to attach, or to be intended to attach or capable of attaching, to each other.
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.
To join (two other objects), or to join (one object) to (another object): to take one object and attach it to another.
To arrive at an intended target; to land.
To associate; to establish a relation between.
To loosen or undo (something that entangles, fastens, holds, or interlocks).
To free (someone or something) from a constraint; (figuratively) to release (something which has been suppressed, such as emotions or objectionable things).
To relax or slacken (something that clasps or grips, such as the arms or hands).
To become loose or come off.
To free from a constraint.