baseboard
base.board \-.bo-(*)rd, -.bo.(*)rd\ n : a board situated at or forming the base of something; specif : a molding covering the joint of a wall and the adjoining floor
Webster's English Dictionarybase.board \-.bo-(*)rd, -.bo.(*)rd\ n : a board situated at or forming the base of something; specif : a molding covering the joint of a wall and the adjoining floor