/euh shooh"lee euhn/ , adj.
of, pertaining to, or typical of a Lower Paleolithic culture of the middle Pleistocene Epoch, characterized by large hand axes and cleavers made by the soft hammer technique.
Also, Acheulian .
[ 1890-95; acheuléen, named after St. Acheul, N France (Somme) (where remains were found) + -éen, var. of -ien ( -ianus -IAN), orig. with nouns ending in -é ]