1. Root

 h₁osgʷ, h₂osgʷ, h₃osgʷ

2. Lexical meanings

 DE: Knoten

3. Comparative evidence

4. Formally comparable roots

 1.h₁es, 2.h₁es, h₁esu̯, h₂es, h₂esg, h₂esp, h₂seu̯s, h₂seu̯t, h₃slei̯dʰ

5. Formally/Semantically comparable roots

6. Revised root variants

7. Comments

8. References

NIL = Wodko Dagmar S., Britta Irslinger, Carolin Schneider (eds.). 2008. Nomina im Indogermanischen Lexikon. Heidelberg: Winter.