The term 'EYES OR EARS' is a PAIR of organs that are essential for the senses of sight and hearing. The crossword solution for this term is 'PAIR', which is a four-letter word that means two things of the same kind that are meant to be used together. Eyes and ears are both organs that are necessary for humans to interact with their environment, and they are often referred to as a PAIR because they are both used together to perceive the world around us.