Lewis Short
suf-frēnātĭo | subf- | suffraen- (noun F) : (, also ), , freno
* A binding down fast, cementing: lapidis,Plin. 36, 22, 49, § 169: globus multā suffrenatione devinctus,Isid. Orig. 19, 10.
Charlton T. Lewis, Charles Short, A Latin Dictionary