Either of a pair of metal rings positioned one on either side of the transom of a gun carriage, through which a handspike is passed when manoeuvring the gun.
Origin
Early 19th century.
Definition of handspike ring in US English:
handspike ring
noun
Gunnery
Either of a pair of metal rings positioned one on either side of the transom of a gun carriage, through which a handspike is passed when manoeuvring the gun.