tilakocavaka , nt. , a kind of arrowhead : Mvy 6099 (in a list of weapons); acc. to Tib. ( mde ḥu zur bzhi pa ) and Jap. , an arrowhead with four edges or blades ; Chin. arrowhead with four layers (?) . I see no etymology for the word; Skt. tila plus BHS kocavaka , q.v. , seems to make no sense.