The term 'HEAL, AS A BONE' can be broken down into three crossword solutions: SET (3 letters), MEND (4 letters), and KNIT (4 letters). The term 'SET' refers to the process of a bone healing itself by forming a callus around the fracture site. The term 'MEND' refers to the act of repairing a broken bone, which is done through surgery or other medical treatments. Finally, the term 'KNIT' refers to the process of a bone healing itself by forming new bone tissue at the fracture site. All three terms are related to the process of a bone healing itself.