In international law . An alien who is the subject or citizen of some hostile state or power. See Dyer, 2b : Co. Litt. 1296. A person who, by reason of owing a permanent or temporary allegiance to a hostile power, becomes, in time of war, impressed with the character of an enemy, and. as such, is disabled from suing in the courts of I lie adverse belligerent . See 1 Kent. Comm. 74; 2 Id. 63; Bell v. Chapman, 10 Johns. (N. Y.) 183: Dorsev v. Brislmm. 177 111. 250. 52 X. E. 303. 42 L. R. A. SH9. 09 Am. St. Rep. 228.