A burst of applause is a loud and enthusiastic show of approval, usually expressed by clapping hands. The crossword solutions for this term are SALVO (5 letters), HAND (4 letters), and ROUND (5 letters). A SALVO is a simultaneous discharge of artillery or firearms, which could be seen as analogous to the sound of many people clapping at once. A HAND is the body part used to make the sound of clapping. A ROUND is a continuous period of time, which could refer to the length of the applause.