swab out of
swab (something) out of (something)
To wipe dirt or other contaminants out of something with a something absorbent or cleansing. It always makes me gag to see him swabbing wax out of his ears like that. Make sure you carefully swab all the dirt out of the wound before you apply the bandage.
swab something out of somethingand swab something Out
to wipe or mop something out of something. The doctor swabbed the wax out of my ear. I swabbed out the last of the mud on the floor.