To eat or drink greedily or quickly, swallowing in large gulps without chewing properly.
Possibly imitative in origin, like 'gulp,' or from dialectal roots meaning to swallow. Related to Old English and Germanic words for swallowing and drinking.
Many words for eating and drinking are imitative—'gollop,' 'gulp,' 'slurp,' 'munch'—because our language actually tries to sound like the eating sounds we're describing.
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