Lewis & Short

ē-mercor, ātus, 1, v. dep. a., to buy up, purchase, bribe (post-Aug.): adulterium ingentibus donis, Tac. A. 13, 44: aditum principis, id. ib. 16, 1: avaritiam praefecti, id. ib. 12, 45; cf. id. ib. 12, 14.
Note: emercor, part. perf. in pass. signif., Amm. 21, 6, 8; 26, 2, 4.