The term 'TRUSTY Horse' can be broken down into two crossword solutions: 'TRUSTY' and 'STEED'. TRUSTY is an adjective that means reliable, dependable, and trustworthy. It is often used to describe people or things that can be trusted and relied upon. A STEED is a strong and powerful horse, usually associated with knights and royalty. It is also used to refer to a horse that is loyal and dependable. Together, the two words form the phrase 'TRUSTY Horse', which is used to describe a horse that is reliable and dependable.