slacks

ot noun

1. The part of anything that hangs loose, having no strain upon it. take in the slack
2. A tidal marsh or shallow that periodically fills and drains.
3. A temporary speed restriction where track maintenance or engineering work is being carried out at a particular place.
4. A valley, or small, shallow dell.

fe’l verb

1. To lose cohesion or solidity by a chemical combination with water; to slake. Lime slacks.
2. To slacken.
3. To mitigate; to reduce the strength of.