Lewis Short
(adverb) : trĭbūtim, tribus
* Through each tribe, tribe by tribe, by tribes: tributim et centuriatim descriptis ordinibus,Cic. Fl. 7, 15: legem centuriatis comitiis tulere, ut quod tributim plebes jussisset, populum teneret, i. e. in the comitia tributa, Liv. 3, 55, 3; cf. id. 7, 16, 7: nummis tributim divisis,Cic. Att. 4, 17, 1: spectacula tributim data,id. Mur. 34, 72; cf. id. ib. 32, 67: arripuit populum tributim,Hor. S. 2, 1, 69.
Charlton T. Lewis, Charles Short, A Latin Dictionary