sy·rin·gin \-jə̇n\noun (-s) Etymology: French syringine, from New Latin Syringa (generic name of Syringa vulgaris) + French -ine : a crystalline glucoside C17H24O9 found especially in the bark of a lilac (Syringa vulgaris) and of privets that on hydrolysis yields glucose and methoxy-coniferyl alcohol