Angusticlave \An*gus"ti*clave\ ([a^]n*g[u^]s"t[i^]*kl[=a]v), n. [L. angustus narrow + clavus a nail, a stripe.] (Rom. Antiq.) A narrow stripe of purple worn by the equites on each side of the tunic as a sign of rank. [Webster 1913 Suppl.] Angustifoliate