The crossword solution for the term BIG-EARED BRAYER is ASS, which is an acronym for a domesticated hoofed mammal of the horse family. This animal is typically used as a working animal, such as for carrying loads or pulling carts. It is also known for its loud braying sound, which is why it is referred to as a 'BRAYER'. The term 'big-eared' refers to the long ears of the ASS, which are larger than those of other members of the horse family.