The crossword solution for the term 'Bristly Appendages' is 'Aristas', which is a seven-letter word. Aristas are stiff, sharp points that grow on the edges of some plants, such as grasses and cacti. They are also known as awns, and they help protect the plant from predators and provide shade. Aristas can be found on many different types of plants, and they can range in size from very small to quite large.