Between-teeth cleaner (6,5)
I believe the answer is:
dental floss
(Other definitions for dental floss that I've seen before include "Thread used in oral hygiene" , "Tombstone cleaner" , "alternative to toothbrush" , "Oral hygiene equipment" .)
I believe the answer is:
dental floss
(Other definitions for dental floss that I've seen before include "Thread used in oral hygiene" , "Tombstone cleaner" , "alternative to toothbrush" , "Oral hygiene equipment" .)