Clavus may refer to: *

Claudius Clavus Claudius Clavus (Suartho) also known as ''Nicholas Niger'', ( da, Claudius Claussøn Swart), (born 14 September 1388), was a Denmark, Danish geographer sometimes considered to be the first Nordic countries, Nordic cartographer. It is believed t ...

(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 In Ancient Roman regalia, a ''laticlave'', or ''clavus'', was a broad stripe or band of purple on the fore part of the tunic, worn by senators as an emblem of office. The name ''laticlavia'' translates to "broad nail" and figuratively "broad stripe ...

and

angusticlavia In ancient Rome, an ''angusticlavia'', ''angusticlavus'', or ''angustus clavus'' was a narrow-strip tunic (''tunica'') with two narrow vertical Tyrian purple stripes (''clavi''). The tunic was typically worn under the toga with the right side stri ...

* A shooting pain in the forehead, associated with

hysteria Hysteria is a term used colloquially to mean ungovernable emotional excess and can refer to a temporary state of mind or emotion. In the nineteenth century, hysteria was considered a diagnosable physical illness in women. It is assumed that ...

, also called ''clavus hystericus'' *

Corn (medicine) A corn or clavus (plural ''clavi'' or ''clavuses'') is a cone-shaped and often painful inwardly directed callus of dead skin that forms at a pressure point near a bone, or on a weight-bearing part of the body. When on the feet, corns can be so ...

, type of callus formed on the toes * The plant disease

ergot Ergot ( ) or ergot fungi refers to a group of fungi of the genus ''Claviceps''. The most prominent member of this group is ''Claviceps purpurea'' ("rye ergot fungus"). This fungus grows on rye and related plants, and produces alkaloids that ca ...

* The pseudo-tail of the

Molidae The Molidae comprise the family of the molas or ocean sunfishes, unusual fish whose bodies come to an end just behind the dorsal and anal fins, giving them a "half-fish" appearance. They are also the largest of the ray-finned bony fish, with the ...

(sunfish) * In Hemiptera, a usually narrow strip of the

hemelytron An elytron (; ; , ) is a modified, hardened forewing of beetles (Coleoptera), though a few of the true bugs (Hemiptera) such as the family Schizopteridae are extremely similar; in true bugs, the forewings are called hemelytra (sometimes alterna ...

adjacent to the scutellum

See also