Entry 1 sense Webster, 1913 Morello /mẽr-ĕl'-ō/ · Mo·rel·lo · IPA /mərˈɛloʊ/ 01 n. A kind of nearly black cherry with dark red flesh and juice, -- used chiefly for preserving. 1. A kind of nearly black cherry with dark red flesh and juice, -- used chiefly for preserving.(Bot.)