Metaphor

Metaphor, a rhetorical figure of speech by which the terms for expressing one idea are transferred in consideration of some analogy or similitude to the expression of another idea. The substitution may take place in the case of substantives, adjectives, verbs, adverbs, or phrases, and even of whole sentences or passages. Most ordinary vocabularies consist to a very large extent of expressions which once were metaphors. For instance an expression is a "squeezing out."