Quinic a. : Pertaining to, derived from, or connected with, quinine and related compounds; specifically, designating a nonnitrogenous acid obtained from cinchona bark, coffee, beans, etc., as a white crystalline substance.

Example:
what is Quinic spline and what is used for?

Taxonomy
Quinic acid, free encyclopedia, History, Pharmaceutical, plant products, search, 1S, 3R, 4S, 5R, 1,3, 4,5, Identifiers, C1, g/mol, cm³, synthetically, implicated.

Defination from the web:
Quinic acid, C 7H 12O 6 is a crystalline acid obtained from cinchona bark, coffee beans, and other plant products and made synthetically by hydrolysis of chlorogenic acid. ... Quinic Acid is also thought to displace binding of the mu opioid receptor antagonist, however this acid was ...