slough 1 (sl, slou) also slew (sl)
1. A depression or hollow, usually filled with deep mud or mire.
2. also slue A swamp, marsh, bog, or pond, especially as part of a bayou, inlet, or backwater.
3. A state of deep despair or moral degradation.
[Middle English, from Old English slōh.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.