hyperbŏlē, ēs, f., = ὑπερβολή, a rhet. fig.,
exaggeration , hyperbole (pure Lat. superlatio and superjectio), Quint. 8, 6, 67 sq.; 8, 4, 29; Sen. Ben. 7, 23 (in Cic. Top. 10, 45, and Fam. 7, 32, 2, written as Greek).
·noun A figure of speech in which the expression is an evident exaggeration of the meaning intended ...
Webster's Dictionary of the English Language