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English definition of “swab”

swab

noun [C]     /swɒb/
a small piece of material used for cleaning an injury or for taking a small amount of a substance from someone's body so that it can be testedMedical dressings, supports and devicesMedical examinationEquipment used for cleaningPreventing infection
(Definition of swab noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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