(n.) Specifically, the term, originally of forty days, during which a ship arriving in port, and suspected of being infected a malignant contagious disease, is obliged to forbear all intercourse with the shore; hence, such restraint or inhibition of intercourse; also, the place where infected or prohibited vessels are stationed.
QUARANTINE
Meaning of QUARANTINE in English
Webster's English dictionary. Английский словарь Webster. 2012