ˈsaləsə̇n noun
( -s )
Etymology: French salicine, from Latin salic-, salix willow + French -ine — more at sallow
: a bitter white crystalline beta-glucoside C 13 H 18 O 7 especially in the bark and leaves of several willows and poplars yielding saligenin and glucose on hydrolysis and formerly used in medicine as an antipyretic, antirheumatic, and tonic — compare populin