
1) Bitter compound
Found on
https://www.crosswordclues.com/clue/salicin

Salicin is an alcoholic β-glucoside. Salicin is an anti-inflammatory agent that is produced from willow bark. It is also found in castoreum, which was used as an analgesic, anti-inflammatory, and antipyretic. The activity of castoreum has been credited to the accumulation of salicin from willow trees in the beaver`s diet, which is transformed to....
Found on
http://en.wikipedia.org/wiki/Salicin

• (n.) A glucoside found in the bark and leaves of several species of willow (Salix) and poplar, and extracted as a bitter white crystalline substance.
Found on
http://thinkexist.com/dictionary/meaning/salicin/

Saligenin-beta-d-glucopyranoside;a glucoside of o-hydroxybenzylalcohol, obtained from the bark of several species of Salix (willow) and Populus (poplar); salicin is hydrolyzed to glucose and saligenin (salicyl alcohol); formerly used in rheumatoid arthritis. ... (05 Mar 2000) ...
Found on
http://www.encyclo.co.uk/local/20973
Sal'i·cin noun [ Latin
salix ,
- icis , a willow: confer French
salicine . See
Sallow the tree.]
(Chemistry) A glucoside found in the bark and leaves of several species of willow (
Salix ) and poplar, and extracted as a bitter white crystalline substance.
Found on
http://www.encyclo.co.uk/webster/S/8

Type: Term Pronunciation: sal′i-sin Definitions: 1. A glucoside of o-hydroxybenzylalcohol, obtained from the bark of several species of Salix (willow) and Populus (poplar); salicin is hydrolyzed to glucose and saligenin (salicyl alcohol); formerly used in rheumatoid arthritis.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=79417

Salicin is a colourless, bitter, odourless, crystalline substance obtained from the bark of several species of tree of the willow and poplar class, and used in medicine externally to check sweating and internally as a specific for rheumatism and rheumatic fever.
Found on
http://www.probertencyclopaedia.com/browse/GS.HTM
No exact match found.