Palindrome

(n.) A word, verse, or sentence, that is the same when read backward or forward; as, madam; Hannah; or Lewd did I live, & evil I did dwell.

Thesaurus Entries

abuse of terms, acrostic, amphibologism, amphiboly, anagram, anastrophe, calembour, chiasmus, corruption, equivocality, equivoque, hypallage, hyperbaton, hysteron proteron, jeu de mots, logogram, logogriph, malapropism, metagram, metastasis, metathesis, missaying, parenthesis, paronomasia, play on words, pun, punning, spoonerism, synchysis, tmesis, wordplay