Nail-headed \Nail"-head`ed\, a.
Having a head like that of a nail; formed so as to resemble
the head of a nail.
[1913 Webster]
{Nail-headed characters}, arrowheaded or cuneiform
characters. See under {Arrowheaded}.
{Nail-headed molding} (Arch.), an ornament consisting of a
series of low four-sided pyramids resembling the heads of
large nails; -- called also {nail-head molding}, or
{nail-head}. It is the same as the simplest form of
dogtooth. See {Dogtooth}.
[1913 Webster]