“Anagram: A word or phrase made by rearranging the letters of another word or phrase: mad policy from diplomacy. Anagrams are used mainly in games and puzzles, especially crosswords, where a clue like ‘a confused tailor in Venice’ leads to Rialto, an anagram of tailor.”
Excerpted from: McArthur, Tom. The Oxford Concise Companion to the English Language. New York: Oxford University Press, 2005.