Swale: [sweyl]
Noun:
1. A low tract of land, especially one that is moist or marshy, often with ranker vegetation than that of the adjacent higher lands.
2. A valleylike intersection of two slopes in a piece of land.
3.A manmade ditch designed to manage water runoff, filter pollutants, and increase rainwater infiltration.
Origin: 1400-50;
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