pal ‧ e ‧ o ‧ lith ‧ ic BrE AmE ( also palaeolithic British English often Paleolithic ) /ˌpæliəʊˈlɪθɪk◂, ˌpeɪ- $ ˌpeɪlioʊ-/ adjective
[ Date: 1800-1900 ; Origin: paleo- + Greek lithos 'stone' ]
relating to the ↑ Stone Age (=the period of time thousands of years ago when people used stone tools and weapons) :
a paleolithic axe
⇨ ↑ Neolithic