The term 'SNAKE SOUND' can be represented by five different crossword solutions: HISS (4 letters), SISS (4 letters), SSS (3 letters), CANA (4 letters), and RATTLE (6 letters). Hissing is a sound made by snakes when they are agitated or threatened, while sissing is a softer sound made by some species of snakes. SSS is another sound made by some snakes, usually as a warning to predators. CANA is a sound made by rattlesnakes, which is created by the shaking of their tail RATTLE. Finally, rattling is the sound made by rattlesnakes when they shake their tail RATTLE.