Hyperbole

n. exaggeration or overstatement intended for effect

Hyperbole (pronounced or "hy-PER-buh-lee"; "HY-per-bowl" is a mispronunciation) is a figure of speech in which statements are exaggerated. It may be used to evoke strong feelings or to create a strong impression, and is not meant to be taken literally. Hyperbole is used to create emphasis. It is often used in poetry and is a literary device as well as a referendum.Some examples include:"He has a brain the size of a pea.""I could eat a horse.""I've heard that a million times.""She is a hundred feet tall."
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Noun
1. extravagant exaggeration
(synonym) exaggeration
(hypernym) trope, figure of speech, figure, image
(derivation) overstate, exaggerate, overdraw, hyperbolize, hyerbolise, magnify, amplify

n. hyperbole, exaggeration or overstatement intended for effect; curve consisting of two separate branches (Geometry)

(n.)
A figure of speech in which the expression is an evident exaggeration of the meaning intended to be conveyed, or by which things are represented as much greater or less, better or worse, than they really are; a statement exaggerated fancifully, through excitement, or for effect.