noun

• A period of 40 days, particularly
  "Querentyne is where a man dyeth seisyd of a maner place and other landis where of the wyfe ought to be indowed, than the woman shall hold the maner place by .xl. days within which tyme her dower shalbe to her assyned."
• A period of 40 days, particularly
• A period of 40 days, particularly
  "Quarantain of the King, is a Truce of forty Days appointed by S. Louis; during which it was expressly forbid to take any Revenge of the Relation or Friends of People."
• (figurative) A similar period, instance, or state of rigidly enforced or self-enforced detention or isolation.
  "Now treating Sandwich seems the fittest choice For Spain, there to condole and to rejoyce: He meets the French, but to avoid all harms, Slips into Groine, Embassies bears no Arms. There let him languish a long Quarrentine, And ne're to England come, till he be clean."

verb

• (transitive) To place into isolation to prevent the spread of any contagious disease.
  "Venice began quarantining incoming ships for 40 days in 1448 to prevent further outbreaks of bubonic plague."
• (intransitive) To enter or stay in quarantine, particularly to self-quarantine to avoid an epidemic disease.
  "International travelers must quarantine themselves at their own expense in a designated hotel for 14 days upon arrival."
• (intransitive, obsolete) To impose a quarantine, to establish quarantine regulations.
  "It has just been announced that Norfolk, Va., and Holly Springs, Miss., have quarantined against Memphis."
• (figurative, transitive) Synonym of isolate more generally.
  "J.F.K. "quarantined" Cuba rather than blockading it to avoid needless escalation of the conflict."

name

• (Christianity, obsolete) Alternative letter-case form of Quarantine: the Mount of Temptation where Jesus Christ supposedly fasted for 40 days, Jebel Quruntul near Jericho.
  "By yonde ys a wyldernys of quarentyne, Wher Cryst wyth fastyng hys body dyd pyne; In that holy place, as we rede, The deuyl wold had of stonys bred."

name

• (dated) Synonym of Mount of Temptation.
  "Than turned we vp in to Quarantene"