The term 'Sparrow Sound' can be broken down into two crossword solutions: 'TWEET' and 'CHIRP'. TWEET is a 5-letter word meaning a short, high-pitched sound made by a bird, usually a sparrow. CHIRP is also a 5-letter word meaning a similar sound, but with a slightly different pitch. Sparrows are small birds that are found in many parts of the world, and they are known for their distinctive chirping and tweeting sounds.