n. In logic, a fallacy depending upon the double signification of some one word: distinguished from amphibology, which depends upon the doubtful interpretation of a whole sentence.n. Ambiguity of speech; specifically, the use, with a view to mislead, of words or expressions susceptible of a double signification; prevarication.n. Synonyms Prevarication, etc. (see evasion); shuffling, quibbling, quibble, equivoke.