Dutch word doorn comes from Proto-Indo-European *tr̥nós, Proto-Indo-European *strēy-, and later Proto-Germanic *þurnuz (Thorn, briar.)

Detailed word origin of doorn

Dictionary entry	Language	Definition
*tr̥nós	Proto-Indo-European (ine-pro)
*strēy-	Proto-Indo-European (ine-pro)
*þurnuz	Proto-Germanic (gem-pro)	Thorn, briar.
thorn	Old Dutch (odt)
thurn	Old Dutch (odt)
dōorn	Middle Dutch (dum)
doorn	Dutch (nld)	Thorn.

Words with the same origin as doorn