A quince is a hard yellow fruit. Quinces are used for making jelly or jam.
quince in British English
(kwɪns)
noun
1.
a small widely cultivated Asian rosaceous tree, Cydonia oblonga, with pinkish-white flowers and edible pear-shaped fruits
2.
the acid-tasting fruit of this tree, much used in preserves
3. Also: Japanese or flowering quince. another name for japonica
Word origin
C14 qwince plural of quyn quince, from Old French coin, from Latin cotōneum, from Greek kudōnion quince, Cydonian (apple)
quince in American English
(kwɪns)
noun
1.
a golden or greenish-yellow, hard, apple-shaped fruit of a small tree (Cydonia oblonga) of the rose family, used in preserves
2.
the tree
Word origin
ME qwince, orig. pl. of quyn < OFr cooin < VL *cotoneum, for L cydonium < Gr kydōnion (mēlon), Cydonian (apple) < Kydōnia, Cydonia, town on N coast of Crete