bĕnĕfĭcĭārĭus — Lewis & Short
bĕnĕfĭcĭārĭus, a, um, adj.beneficium,
I pertaining to a favor.
I As adj. only once:
res,Sen. Ep. 90, 2.—
II Freq. subst.: bĕnĕfĭcĭārĭi, ōrum, m.; in milit. lang., soldiers who, through the favor of their commander, were exempt from menial offices (throwing up intrenchments, procuring wood and water, foraging, etc.), free or privileged soldiers: beneficiarii dicebantur milites, qui vacabant muneris beneficio;
e contrario munifices vocabantur, qui non vacabant, sed munus reipublicae faciebant,Fest. p. 27; cf.
Comm. p. 347: beneficiarii superiorum exercituum,Caes. B. C. 3, 88. Such beneficiarii were usually in attendance upon their commanders, and were promoted by them to office: *benefikia/lioi oi( e)pi\ qerapei/a| tw=n *magistra/twn tetagme/noi, Gloss.:
beneficiarii ab eo appellati quod promoventur beneficio tribunorum,Veg. Mil. 2, 7; Caes. B. C. 1, 75; Plin. Ep. 10, 21 (32); 10, 27 (36); Inscr. Orell. 192; 929; 1394 et saep.