Question

what was meaning of "swab"

Answer 1

Swab is a wad of absorbent material usually wound around one end of a small stick and used especially for applying medication or for removing material from an area. 

Answer 2

a piece of soft material used by a doctor, nurse, etc. for cleaning a place where your body has been injured or cut, or for taking a substance from your body to test it (or) noun. a large mop used on shipboard for cleaning decks, living quarters, etc. a bit of sponge, cloth, cotton, or the like, sometimes fixed to a stick, for cleansing the mouth of a sick person or for applying medicaments, drying areas, etc. the material collected with a swab as a specimen for microscopic study.