The term 'TOOTH COMB' is a combination of two words, 'TOOTH' and 'COMB'. TOOTH refers to the hard, white substance that covers the surface of the teeth, while COMB refers to a tool used for grooming hair. A TOOTH COMB is a device used to clean the teeth, usually consisting of a handle with a row of small, pointed metal or plastic bristles. It is used to remove plaque and food particles from between the teeth and along the gum line. The crossword solution for this term is 'FINE', which stands for 'Frequent Interdental Nozzle-Ejecting'. This is a type of TOOTH COMB that uses a nozzle to eject water and air to clean between the teeth.