aequĭlībrĭum, ii, n. [aequilibris],
I a level or horizontal position , equilibrium : quaedam ligna ad medium submersa ad aequilibrium aquae, Sen. Q. N. 3, 25; so Col. Arb. 5, 2.—
II Trop., a perfect equality : rumpendi pariter membri, Gell. 20, 1.