a. [See CRACK- 2.] = CRACK-BRAINED, crazy.
1796. Mad. D’Arblay, Camilla, III. V. iii. 43. She likes our crack-headed old Doctor as well as e’er a young gentleman in Christendom.
1845. W. K. Kelly, trans. L. Blanc’s Hist. Ten Y., II. 397. What would you have me say to a crack-headed fellow like this?
