Xenium, xenij, neut. ge. Martialis. A present sente by one to a man.
Lewis and Short: Latin dictionary
xĕnĭum, ii, n., = ce/nion, a gift or present made to a guest (pure Lat. lautia). I.Lit., Plin. Ep. 6, 31, 14; Vitr. 6, 10.—Hence, Xenia, the title of the thirteenth book of Martial's epigrams, because treating of such things as were usually presented to guests, Mart. 13, 3, 1.—II.Transf., in gen., a gift. present, Plin. Ep. 5, 14, 8; Dig. 1, 16, 6; Vulg. Ecclus. 20, 31.