calastic,a. so in Burton for chalastick, ad.Gr. χαλαστικός laxative. 1621Burton Anat. Mel. ii. v. iii. i. (1651) 401 Octavius Horatianus..prescribes calastick Cataplasms, or dry purging medicines.1656Blount Glossogr., Calasticks, purging medecines, or oyntments.1678Phillips, Calasticks.