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English thorn
Old English þorn (inherited)
Old English þyrn (mention)
Old Church Slavonic трънъ (cognate)
Danish - (cognate)
German Dorn (cognate)
Middle English thorn (inherited)
Middle English þorn (mention)
West Frisian toarn (cognate)
Proto-Germanic *þurnuz (inherited)
Gothic 𐌸𐌰𐌿𐍂𐌽𐌿𐍃 (cognate)
Proto-Indo-European *tr̥nós (inherited)
Proto-Indo-European *(s)ter- (mention)
Norwegian Bokmål torn (mention)
Low German Doorn (cognate)
Dutch doorn (cognate)
Norwegian - (cognate)
Polish cierń (cognate)
Russian тёрн (cognate)
Sanskrit तृण (cognate)
Swedish torn (cognate)
Swedish törne (mention)

English buckthorn (compound)
English wynn (link)
English thorny (suffix)
English blackthorn (compound)
English hawthorn (compound)
English thornfish (compound)
English sandthorn (compound)
English firethorn (compound)
English boxthorn (compound)
English maythorn (compound)
English thornlike (suffix)
English thornproof (suffix)
English thornveld (compound)
English thornless (suffix)
English whitethorn (compound)
English thornbill (compound)
English thorntail (compound)
English thornen (suffix)
English thornhog (compound)
English thornbird (compound)
English thornback (compound)
English thornhead (compound)
English crown of thorns (mention)
English camelthorn (compound)
English thornery (suffix)
English hookthorn (compound)
English thorn tree (affix)
English knobthorn (compound)
English yellowthorn (compound)
Cimbrian dòrn (cognate)
Czech trn (cognate)
German Dorn (cognate)
Finnish taarna (cognate)
Faroese torn (cognate)
Alemannic German Torn (cognate)
Icelandic þyrnir (cognate)
Konkani तण (cognate)
Luxembourgish Dar (cognate)
Malay duri (link)
Norwegian Bokmål torn (cognate)
Norwegian Nynorsk torn (cognate)
Old Saxon thorn (cognate)
Russian тёрн (cognate)
Sanskrit तृण (cognate)
Serbo-Croatian trn (cognate)
Serbo-Croatian трн (mention)
Slovak tŕň (cognate)
Saterland Frisian Touden (cognate)
Swedish torn (cognate)
Swedish törne (cognate)