subs. phr. (common).Official costume, evening dress, or (theatrical) MAKE-UP (q.v.).
1884. HAGGARD, Dawn, vol. iii., ch. ii. She. Have you seen the hero of the evening? He. Who? Do you mean the Portuguese Governor in his WAR-PAINT?
1888. St. Jamess Gazette, 9 April. Sir William Jenner in his WAR-PAINT as president of the Royal College of Physicians.