Webster’s Revised Unabridged Dictionary · 1913
Congiary
Con′gi·a·ry (kŏn′jĭ·ā·ry̆), n.; pl. Congiaries (#). [L. congiarium, fr. congius a liquid measure.] A present, as of corn, wine, or oil, made by a Roman emperor to the soldiers or the people; — so called because measured to each in a congius. Addison.
☞ In later years, when gifts of money were distributed, the name congius was retained.