The term 'click fingers' is a phrase used to describe the act of snapping one's fingers. It is a common gesture used to express approval, excitement, or to get someone's attention. The crossword solution for this term is 'SNAP, ' which is a four-letter word. To SNAP one's fingers, one must quickly press their thumb and middle finger together to create a clicking sound. This gesture has been used in many cultures for centuries and is still widely used today.