marmaladeyoudaoicibaDictYouDict
marmalade: [16] The word marmalade originally denoted ‘quince jam’. It comes via French from Portuguese marmelada, a derivative of marmelo ‘quince’. And marmelo goes back via Latin melimēlum to Greek melímēlon, a term meaning literally ‘honeyapple’ which was applied to the fruit of an apple tree grafted on to a quince (the second element, melon ‘apple’, is the source of English melon). Not until the 17th century was marmalade used for a preserve made from citrus fruits.
=> melon
crab (n.2)youdaoicibaDictYouDict
"fruit of the wild apple tree," c. 1300, crabbe, perhaps from Scandinavian (compare Swedish krabbäpple), of obscure origin. The combination of "bad-tempered, combative" and "sour" in the two nouns crab naturally yielded a verb meaning of "to vex, irritate" (c. 1400), later "to complain irritably, find fault" (c. 1500). The noun meaning "sour person" is from 1570s.
marmalade (n.)youdaoicibaDictYouDict
late 15c., from Middle French marmelade, from Portuguese marmelada "quince jelly, marmalade," from marmelo "quince," by dissimilation from Latin melimelum "sweet apple," originally "fruit of an apple tree grafted onto quince," from Greek melimelon, from meli "honey" (see Melissa) + melon "apple" (see malic). Extended 17c. to "preserve made from citrus fruit."