Is a word, verse or sentence that reads alike backwards and forwards.
It has been recorded that a palindrome was founded as long ago as 79AD at Herculaneum an ancient Roman town destroyed by volcanic flows. Its ruins are to be found in Ercolano, Campania, Italy
Examples of such words are: Mom, pop, deed, madam, civic, level, racecar, refer, Hannah
In a spare moment perhaps you can make or find others.