[ad. L. Aventīnus (sc. mons) one of the seven hills of Rome.] fig. A secure position, a strong tower. (Obs.)
c. 1620. Fletcher & Mass., Double Marr., V. ii. (in Webster). Into the castles tower, The only Aventine that now is left him!
1626. Massinger, Rom. Actor, I. i. I expect No favour from him. My strong Aventine is That great Domitian.