The term 'FINE HAIRS' can be summarized by the crossword solution CILIA, which is a five-letter word. CILIA are microscopic, hairlike structures that line the surface of many cells in the human body. They are used to move particles and fluids across the cell surface, and they also help to protect the cell from infection. CILIA are made up of fine hairs, which is why they are an appropriate solution for the term 'FINE HAIRS'.