dē-rŭo, rŭi, 3, v. a. and n. (a very rare word).
I Act., to throw or cast down .
A Lit.: hiems immensam vim aquarum ruptis nubibus deruat, Sen. Q. N. 3, 27.—
B Trop., to take away, detract : cumulum de laudibus alicujus, * Cic. Att. 16, 11, 2.—
II Neutr., to fall down : Ap. M. 2, p. 128; 7, p. 196.