Shiny/ˈʃaɪni/ Definition 1 of 3Pro Tip 1/3Light Reflection The 'shiny' emphasis is on how light bounces off objects, making them appear sparkly. A shiny diamond ring. Pro Tip 2/3Attention Grabbing 'Shiny' items often catch your eye quickly because they stand out. The shiny balloons were the first thing we noticed. Pro Tip 3/3Cleanliness Indicator Something 'shiny' can imply it is clean and free from dirt or blemishes. After washing, the glass became shiny.