The term 'buzzing sound' can be represented by four different crossword solutions: WHIRR (5 letters), WHIR (4 letters), DRONE (5 letters), and SKIRR (5 letters). WHIRR is a sound made by a rapidly rotating object, such as a fan or motor. WHIR is a similar sound, but softer and more drawn out. DRONE is a continuous, low-pitched sound, often associated with an engine or motor. SKIRR is a high-pitched, buzzing sound, usually made by an insect. All of these words describe a buzzing sound, which is a common sound in nature and in many man-made machines.