The term 'DULCIMER's Shape' is a crossword puzzle solution that has nine letters and is spelled 'Trapezoid'. A trapezoid is a four-sided geometric shape with two parallel sides and two non-parallel sides. It is a type of quadrilateral, which is a four-sided polygon. The angles of a trapezoid are not all equal, unlike a parallelogram. Trapezoids are commonly found in everyday life, such as in the shape of a roof or a table top.