n. [ See Cousinage. ] (Law) (a) Collateral relationship or kindred by blood; consanguinity. Burrill. (b) A writ to recover possession of an estate in lands, when a stranger has entered, after the death of the grandfather's grandfather, or other distant collateral relation. Blackstone. [ 1913 Webster ]
n. [ For co. sinus, an abbrev. of L. complementi sinus. ] (Trig.) The sine of the complement of an arc or angle. See Illust. of Functions. [ 1913 Webster ]