A thousand-year-old redundancy — mulberry literally means "mulberry-berry" because Anglo-Saxons added their word for berry to a Latin word that already meant berry.
A tree bearing edible berries, or its dark purple fruit, historically cultivated for silk production.
From Old English mōrberie, from Latin morum meaning mulberry (from Greek moron) plus Old English berie meaning berry — a redundant compound since morum already means berry Key roots: moron (Greek: "mulberry").