Meaning: Flossing once a day helps to clean your teeth deeply and remove plaque and food particles that brushing alone can't reach.
Choice of Words: The word "Floss" means a thin thread used to clean between the teeth. "Once" means one time. "Daily" means every day. "Clean" means to make something free from dirt or impurities. "Teeth" are the hard white structures in the mouth used for biting and chewing. "Deeply" means to a great extent or degree.