Where does “Δίπυλον” come from?

Δίπυλον (Greek) comes from Ancient Greek Δίπυλον, from Ancient Greek δί-, from Ancient Greek διά, from Proto-Indo-European dwís, from Proto-Indo-European dwóh₁ — two.

Δίπυλον (Greek): The Dipylon; the ancient gate of Athens

Definitions

The Dipylon; the ancient gate of Athens

Ancestry of “Δίπυλον”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	Δίπυλον	The Dipylon gate; the main gate of Athens located in the Kerameikos
2	Ancient Greek	δί-	Twice, double
3	Ancient Greek	διά	throughout
4	Proto-Indo-European	dwís	twice, doubly; in two
5	Proto-Indo-European	dwóh₁	two

Every word from Proto-Indo-European dwóh₁ →Every word from Proto-Indo-European dwís →Every word from Ancient Greek διά →