1. (n.) A ring formed by twisting on itself a single strand of an unlaid rope; also, a metallic eyelet in or for a sail or a mailbag. Sometimes written grummet.

2. (n.) A ring of rope used as a wad to hold a cannon ball in place.

air hole annulet armhole blowhole bullet-hole bunghole circlet cringle deadeye eye eyelet gasket guide keyhole knothole loop loophole manhole mousehole peephole pigeonhole pinhole placket placket hole porthole punch-hole ringlet roundlet spiracle tap vent venthole