We don't have synonyms for quinces yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are quince, quincey and quines.
(n) :
(countable) The pear-shaped fruit of a small tree of the rose family, Cydonia oblonga.
(n) :
(countable) The deciduous tree bearing such fruit, native to Asia.
(n) :
A soft yellow colour, like that of a quince.
(n) :
A surname.
(n) :
(informal) Clipping of quinceañera. [(chiefly US) The fifteenth birthday and particularly the celebration and ceremony surrounding it for a young Latina woman.]
(n) :
(countable) The pear-shaped fruit of a small tree of the rose family, Cydonia oblonga.
(n) :
(countable) The deciduous tree bearing such fruit, native to Asia.
(n) :
A soft yellow colour, like that of a quince.
(n) :
A surname.
(n) :
(informal) Clipping of quinceañera. [(chiefly US) The fifteenth birthday and particularly the celebration and ceremony surrounding it for a young Latina woman.]