pal ‧ in ‧ drome /ˈpæləndrəʊm, ˈpælɪndrəʊm $ -droʊm/ BrE AmE noun [countable]
[ Date: 1600-1700 ; Language: Greek ; Origin: palindromos , from palin 'back, again' + dramein 'to run' ]
a word or phrase such as ‘deed’ or ‘level’, which is the same when you spell it backwards