رض

مِرَضَّةٌ ذ A thing with which one bruises, brays, pounds, or crushes; or with which one bruises, &c., coarsely. (TA.) [And particularly what is termed in Latin Tribulum; (Golius, on the authority of Meyd;) i. e. a kind of drag used for the purpose of separating the grain of wheat and barley &c. and of cutting the straw; more commonly called نَورَجٌ (q. v.) and مِدْرَسٌ and جَرْجَرٌ.] -A2- See also رَضٌّ.