The term DECORATIVE FLAP ON A GARMENT can be summarized as a 'Lappet', which is a 6-letter word. A lappet is a decorative flap or fold of fabric on a garment, often found on the shoulders or chest area. It is usually ornamental and can be made of different materials such as lace, velvet, or silk. Lappets are commonly seen on traditional clothing, such as military uniforms, and are also used to add a decorative touch to modern clothing.