Haggard EQUESTRIAN is a term used to describe a RIDER who is experienced and knowledgeable in the art of horse riding. The term is derived from the word 'HAGGARD, ' which means 'worn out' or 'TIRED, ' and 'EQUESTRIAN, ' which refers to someone who rides horses. The crossword solutions for the term HAGGARD EQUESTRIAN are RIDER, which is a five-letter word. Therefore, HAGGARD EQUESTRIAN can be defined as an experienced and knowledgeable RIDER who has been riding horses for a long time.