Inlaw \In*law"\, v. t. [In + law. Cf. {Inlagation}.] (Old Eng. Law) To clear of outlawry or attainder; to place under the protection of the law. --Burrill.
in-law \in"-law`\, n. A person who is related by marriage, as distinguished from a {blood relative}; esp. mother-in-law (the mother of one's spouse), father-in-law (the father of one's spouse), brother-in-law (the brother of one's spouse, or husband of one's spouse's sister), sister-in-law (the sister of one's spouse, or wife of one's spouse's brother). [PJC]
-in-law \-in"-law`\, suff. A suffix meaning through marriage. See {in-law}. [PJC]