The Collaborative International Dictionary
Picra
Picra \Pi"cra\, n. [L., fr. Gr. ? sharp, bitter.] (Med.) The powder of aloes with canella, formerly officinal, employed as a cathartic.
Wiktionary
picra
n. (context medicine dated English) The powder of aloes with canella, formerly officinal, employed as a cathartic.
Usage examples of "picra".
For the first few days Fox was in serious discomfort, sometimes in considerable pain, for the rhubarb, hiera picra and calomel worked powerfully.