- 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.
- [Bot] a quince tree or shrub.
Etymology: Prob. a pl. from OE. quyne coin, OF. coin cooin, F. coing, from L. Cydonius a quince tree, as adj., Cydonian, Gr. � Cydonian, � � a quince, fr. � Cydonia, a city in Crete, � the Cydonians. Cf. Quiddany