S / suffrēnātĭo
noun

suffrēnātĭo

gen. suf-frēnātōnis · gender feminine · decl. 3rd
(, also ), freno
a binding down fast; cementing
a binding down fast, cementing: lapidis, Plin. 36, 22, 49, § 169: globus multā suffrenatione devinctus, Isid. Orig. 19, 10.