Making a hollow bubbling or gurgling sound, or the present participle of 'gurge,' meaning swallowing or engulfing.
From the same Latin root 'gurges' and 'gurgitare.' The onomatopoetic quality makes it difficult to distinguish between the actual sound-production meaning and the etymological meaning.
Words for sounds are among the most onomatopoetic and playful in English—'gurging' falls into that special category where the word almost sounds like its meaning, making it fun to say regardless of precision.
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