clave
/ˈklabe/ · B1 · adj
password
🔑 clave = Latin clavis, key; same root as clef, clavier and enclave
From Latin clavis (key). A music clef is the key to reading the staff, an enclave is land locked in as if by key, and a conclave meets under lock and key. Spanish llave (door key) is the same word worn down; clave kept the abstract senses: code, password, crucial.