gutters

noun gutters

• guttering — a channel at the side or in the middle of a road or street, for leading off surface water.
• channels — Plural form of channel.
• trenches — Fortification. a long, narrow excavation in the ground, the earth from which is thrown up in front to serve as a shelter from enemy fire or attack.
• grooves — Plural form of groove.
• ditching — a long, narrow excavation made in the ground by digging, as for draining or irrigating land; trench.