Hairy tongue is a misnomer. Small protuberances on the tongue become thick and appear black as a result of poor oral hygiene. Overview. Hairy tongue, also known as black tongue, is a benign condition of elongation and staining of the fingerlike projections (papillae) on the tongue surface.
Full Definition of BASEBOARD. : a board situated at or forming the base of something; specifically: a molding covering the joint of a wall and the adjoining floor.See baseboard defined for English-language learners.See baseboard defined for kids. a board situated at or forming the base of something; specifically: a molding covering the joint of a wall and the adjoining floor. See baseboard defined for English-language learners.
A cement board is a combination of cement and reinforcing fibers formed into 4 foot by 8 foot sheets (or 3 foot by 5 foot sheets), 1/4 to 1/2 inch thick that are typically used as a tile backing board.