Shiners is a term used to describe a variety of things, from bruises around the eyes to fish that shine in the water. However, there are several synonyms for the word shiners that can help you describe these things in more detail. For instance, black eyes, bruised eyes, or swollen eyelids can all be referred to as shiners. In the case of fish, shimmers, gleams, glistens, glimmers, or twinkles can all be used instead. Depending on what context you're using "shiners" in, you could try these synonyms and see which one suits your situation best.