plural of safety pin

plural of cotter pin

(firearms) the part of the firing mechanism which strikes the cartridge's primer to ignite the gunpowder.

plural of bitt-pin

(nautical) A device like a belaying pin but of heavier scantlings; a turned length of wood or metal passed through the bitts or cross-piece, used to prevent the cable from slipping off or over the bitt-heads yet removable so as to facilitate doing so.

A long, thin bone in a fish extending sideways from the backbone.

plural of pin-point

Third-person singular simple present indicative form of pin-point

present participle of pin-point

plural of pin-hole