Narrow board is a type of woodworking that involves cutting thin strips of wood and joining them together to form a board. The three crossword solutions for the term narrow board are LATH (4 letters), SLAT (4 letters), and BATTEN (6 letters). LATH is a thin strip of wood used as a base for plaster or stucco walls. SLAT is a thin strip of wood used in furniture, window blinds, and other items. BATTEN is a thin strip of wood used to strengthen a structure or to cover a joint.