The crossword solution for the term 'Word Before Letter or Mail' is CHAIN. A CHAIN is a series of connected links, usually made of metal, used to bind, fasten, or secure objects together. Chains are often used in the form of jewelry, such as necklaces and bracelets, and are also used to secure items such as locks and padlocks. Chains can also be used to link two or more pieces of mail together, such as when sending multiple letters in one envelope.