A channel, usually made of metal, PVC, or wood, installed along the eaves of the roof to collect and carry away rainwater from the roof.
Did you know that you can spot hail damage by taking a look at your gutters? During a hailstorm, the soft metal (such as aluminum) used for many downspouts gets pummeled with those ice stones. You might need to look from different angles or feel the surface to notice, but that sign is one way to identify that your home has faced an intense beating from hail.