Mulberry
Old English mōrberie, from Latin morum + berry; related to Dutch moerbezie and German Maulbeere .
wiktionary
From Middle English mulbery, molberye, murberie, partly from Old English mōrberġe(“mulberry”) and partly from Middle Low German mulbere(“mulberry”). Compare Dutch moerbezie, moerbei(“mulberry”), German Maulbeere(“mulberry”).
etymonline
mulberry (n.)
c. 1300, "tree of the genus Morus;" mid-14c. in reference to a berry from the tree; an alteration of morberie (13c.) from or cognate with Middle High German mul-beri (alteration by dissimilation of Old High German mur-beri, Modern German Maulbeere); both from Latin morum "mulberry, blackberry" + Old English berie, Old High German beri "berry."
The Latin word probably is from Greek moron "mulberry," from PIE *moro- "blackberry, mulberry" (source also of Armenian mor "blackberry," Middle Irish merenn, Welsh merwydden "mulberry"). As a color-name by 1837. The children's singing game with a chorus beginning "Here we go round the mulberry bush" is attested by 1820s, first in Scotland.