society > occupation and work > equipment > building and constructing equipment > fastenings > [noun] > nail > with flat head (4)
spec. (perhaps originally short for tack-nail n. at compounds 1b.) A small sharp-pointed nail of iron or brass, usually with a flat and…
†(a) See quot. 1721. (b) A nail with a flat head to clasp the wood.
a tack with a broad head, which may be pushed in with the thumb; North American = drawing pin, n.; also as v. transitive.