The term 'hand-signal' can refer to two different crossword solutions: SALUTE (6 letters) and GESTURE (7 letters). A SALUTE is a formal greeting or recognition of respect, usually done by raising the right hand to the forehead. It is commonly used in military contexts, but can also be used as a sign of respect in other contexts. A GESTURE is a movement of the body, especially of the hands or arms, to express an idea or meaning. Gestures are often used in communication, and can be used to express emotions, ideas, or even to replace words.