quince

n. either of two trees that produce small round yellowish fruit; fruit produced by these trees

The Quince (Cydonia oblonga) is the sole member of the genus Cydonia and native to warm-temperate southwest Asia in the Caucasus region. It is a small deciduous tree, growing 5-8 m tall and 4-6 m wide, related to apples and pears, and like them has a pome fruit, which is bright golden yellow when mature, pear-shaped, 7-12 cm long and 6-9 cm broad.
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Noun
1. small Asian tree with pinkish flowers and pear-shaped fruit; widely cultivated
(synonym) quince bush, Cydonia oblonga
(hypernym) fruit tree
(member-holonym) Cydonia, genus Cydonia
2. aromatic acid-tasting pear-shaped fruit used in preserves
(hypernym) edible fruit
(part-holonym) quince bush, Cydonia oblonga

adj. fifteen, numbering 15

n. fifteen, number 15

(n.)
The fruit of a shrub (Cydonia vulgaris) belonging to the same tribe as the apple. It somewhat resembles an apple, but differs in having many seeds in each carpel. It has hard flesh of high flavor, but very acid, and is largely used for marmalade, jelly, and preserves.
  

(n.)
a quince tree or shrub.