(noun)
a restriction on the communication between and activities of people, or on the transport of goods, in order to control the spread of pests or disease;
e.g. A quarantine was placed on the fruits arriving from the infested orchard.
(verb)
to place a person or animal in isolation due to their suspected exposure to a disease, in order to prevent the spread of the disease, i.e. to detain them in quarantine;
e.g. They were forced to quarantine when they returned from a disease-stricken region.
(verb)
to isolate someone from normal communication or relations/interactions, by or as if by declaring quarantine;
e.g. The aggressor was made to quarantine until he agreed to behave properly.