(historical law) The 40-day period during which a widow is entitled to remain in her deceased husband's home while any dower is collected and returned.

(transitive) To place into isolation to prevent the spread of any contagious disease. / (figuratively, transitive) Synonym of isolate more generally. / (figuratively, transitive) Synonym of restrict.

(Christainity, obsolete) Alternative letter-case form of Quarantine: the Mount of Temptation where Jesus Christ supposedly fasted for 40 days, Jebel Quruntul near Jericho.

A swampy, soggy area of ground. / (figuratively) A perilous, mixed up and troubled situation; a hopeless tangle.

(transitive) To embroil (a person, etc.) in complexity or difficulty.

A fundamental, generic term used when referring to the measurement (count, amount) of a scalar, vector, number of items or to some other way of denominating the value of a collection or group of items.

(countable) A dispute or heated argument (especially one that is verbal).

(intransitive, also figuratively) To argue fiercely; to contend; to squabble; to cease to be on friendly terms, to fall out. / (intransitive) To find fault; to cavil.

(countable, archery, historical) An arrow or bolt for a crossbow or an arbalest (“a late, large type of crossbow”), traditionally with the head square in its cross section.

(US, modern British and Australian, short scale) A thousand trillion (logic: 1,000 × 1,000^4): 1 followed by fifteen zeros, 10¹⁵.