CLAVUS

(Lat. clavus, a nail.) In Agriculture, an excrescence from the grains of rye, of a brown or blackish colour. It is a»parasific;il fungus, called.Sp-rmoedia cl<ivi(-i, I iluahle agent in exciting Uterine action during labour.A severe pain in the forehead compared to the driv- 1112 of a nail into the skull has been called clavus by medical writ CLAW, or [s. 253]