a. Obs. rare. [f. L. crass-us CRASS + -OUS: cf. F. crasseux (in Paré 16th c.), dirty, sordid.] = CRASS a.
1708. Motteux, Rabelais, V. xxii. (1737), 100. The Servitude of crassous Ignorance.
1788. H. Clarke, School Candidates (1877), 20. Thus emancipate yourselves from the imputation of crassous ignorance.
