inlaw Meaning, Definition & Usage

In*law" transitive verb
Etymology
In + law. Cf. Inlagation.
Definitions
  1. (Old Eng. Law) To clear of outlawry or attainder; to place under the protection of the law. Burrill. In"-law. A person who is related by marriage, as distinguished from a blood relative; esp. mother-in-law, father-in-law, brother-in-law, sister-in-law

Webster 1913