Marmalade:
1480, from M.Fr. marmelade, from Port. marmelada "quince jelly, marmalade," from marmelo "quince," by dissimilation from L. melimelum "sweet apple," originally "fruit of an apple tree grafted onto quince," from Gk. melimelon, from meli "honey" + melon "apple." Extended 17c. to "preserve made from citrus fruit."
(not, unfortunately, from 14CFR)