A hum is a sound made by producing a wordless tone with the mouth closed, forcing the sound to emerge from the nose. To hum is to produce such a sound, often with a melody. ... A hum has a particular timbre (or sound quality), usually a monotone or with slightly varying tones.
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A hum is a sound made by producing a wordless tone with the mouth closed, forcing the sound to emerge from the nose. To hum is to produce such a sound, often with a melody. ... A hum has a particular timbre (or sound quality), usually a monotone or with slightly varying tones.