The term 'MAIL MAN' can be broken down into two crossword solutions: KNIGHT (6 letters) and ARMORER (7 letters). A KNIGHT is a person of noble birth who serves a monarch or lord in a military capacity. Knights were typically heavily armored and trained in the use of weapons such as swords, lances, and bows. An armorer is a person who makes or repairs armor and weapons. Armorers were essential to the success of a KNIGHT, as they provided them with the necessary protection and weaponry for battle.