postnasal drip

American  

noun

1. a trickling of mucus onto the pharyngeal surface from the posterior portion of the nasal cavity, usually caused by a cold or allergy.

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postnasal drip British  

/ pəʊstˈneɪzəl /

noun

1. med a mucus secretion from the rear part of the nasal cavity into the nasopharynx, usually as the result of a cold or an allergy

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Etymology

Origin of postnasal drip

First recorded in 1945–50