A chain component is a part of a chain that helps to form the whole. The two crossword solutions for this term are 'LINK' and 'LINK hover:text-barberry-yellow'>ISLET'. A LINK is a single unit of a chain, usually made of metal or plastic, that connects two other components together. An LINK hover:text-barberry-yellow'>ISLET is a small island, usually surrounded by water, that is connected to a larger landmass.