chain stopper
cable stopper
riding chock

This chafe chain would then be held in the chain stopper on board the export tanker.

The devil's claw is a device that is used as a chain stopper to grab and hold an anchor chain.

A devil's claw is often used on merchant ships because it is lighter and easier to manage than other types of chain stoppers, such as a pelican hook.

The monofunctional monomer, often referred to as a chain stopper, controls and limits the polymerization of bifunctional monomers because the growing polymer yields chain ends devoid of functional groups and therefore incapable of further reaction.