Where does “ilekskverko” come from?

ilekskverko (Esperanto) comes from Esperanto kverko, from Latin quercus, from Proto-Italic kʷerkus, from Proto-Indo-European pérkus, from Proto-Indo-European perkʷ- — oak.

ilekskverko (Esperanto): holm oak

Definitions

holm oak

Ancestry of “ilekskverko”, step by step

ilekskverko traces back through two separate lines of ancestry.

via Esperanto kverko

Step	Language	Word	Meaning
1	Esperanto	kverko	oak, oak tree; oak
2	Latin	quercus	An oak, oak-tree, especially the Italian oak; Of...
3	Proto-Italic	kʷerkus	—
4	Proto-Indo-European	pérkus	oak
5	Proto-Indo-European	perkʷ-	oak

via Esperanto ilekso

Step	Language	Word	Meaning
1	Esperanto	ilekso	holly
2	Latin	īlex	holm oak (Quercus ilex)

Every word from Proto-Indo-European perkʷ- →Every word from Proto-Indo-European pérkus →Every word from Proto-Italic kʷerkus →