Clavus may refer to: Claudius Clavus (born 1388), 15th-century Danish cartographer Clavus (gastropod), a genus of snails in the family Drilliidae The Roman clavus, a reddish-purple stripe on garments that distinguished members of the senatorial and equestrian orders; see laticlave and angusticlavia A shooting pain in the forehead, associated with hysteria, also called clavus hystericus Corn (medicine), type of callus formed on the toes The plant disease ergot The pseudo-tail of the Molidae (sunfish) In Hemiptera, a usually narrow strip of the hemelytron adjacent to the scutellum See also Clav (disambiguation)