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1. A shallow channel of metal or wood set immediately below and along the eaves of a building to catch and carry off rainwater from the roof. Also see box gutter, concealed gutter, flying gutter, standing gutter, sunk gutter, through gutter. Also called eaves gutter, eaves trough, roof gutter.
2. In electrical wiring, the space provided at the sides, top, or bottom within an electric panel or switchboard to permit the installation of feeder and branch wiring conductors.