The term 'Dynamite Sound' is a phrase used to describe the loud, explosive sound of dynamite. The crossword solutions for this term are 'POW' (3 letters), 'BANG' (4 letters), and 'BOOM' (4 letters). These words all refer to the loud sound that dynamite makes when it explodes. 'POW' is a sound effect often used in comic books and cartoons to represent a sudden, powerful explosion. 'BANG' and 'BOOM' are both onomatopoeic words used to describe the sound of an explosion.