Clavus | Webster's Dictionary of the English Language

clavus
clāvus, i, m. [root klu-, v. claudo; prop. that which shuts or fastens]. I A nail , usually of metal...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
clavus
clāvus ī, m CLAV-, a nail : clavi ferrei, Cs.: clavos figentes, L.: clavo ab dictatore fixo, L.: e...

An Elementary Latin Dictionary