Jointure is, in law, a provision for a wife after the eath of her husband. As defined by Sir Edward Coke, it is "a competent livelihood of freehold for the wife, of lands or tenements, to take effect presently in possession or profit after the death of her husband for the life of the wife at least, if she herself be not the cause o determination or forfeiture of it': (Co. Litt. 36b).