Lewis & Short

ū̆trindĕ, adv. [uter-inde], from or on both sides: de frumento utrobi bona, utrobi mala gratia capiatur, utrinde iram, utrinde factiones tibi pares, Cato ap. Charis. p. 198 P.
With gen.: utrinde orarum, Cael. Aur. Acut. 2, 37.