Words for oak (Quercus) in Celtic languages:
| Proto-Celtic | *daru [d̪ˠaɾʲ] = oak |
|---|---|
| Gaulish | Dervo = used in placenames |
| Old Irish (Goídelc) | dair [d̪ˠaɾʲ] = oak |
| Irish (Gaeilge) | dair [d̪ˠuːnˠ] = oak doire [ˈd̪ˠɛɾʲə] = oak-wood; wood, grove, thicket |
| Scottish Gaelic (Gàidhlig) | dair [darʲ] = oak (archaic) darach [darəx] = oak, oaken, made of oak; ship (poetic) |
| Manx (Gaelg) | darragh = oak, oaken, oak grove, oak wood darrag = oak, beam, cast (fishing), snood, hairline darree = oak |
| Proto-Brythonic | *dar [ˈdar] = oak tree |
| Middle Welsh (Kymraec) | dar = oak |
| Welsh (Cymraeg) | dâr [ˈdaːr] = oak tree, foremost warrior, leader, mighty lord derwen [ˈdɛrwɛn] = oak tree derw = oak trees |
| Old Cornish | dar = oak |
| Cornish (Kernewek) | dar [daːr / dæːr] = oak derwen = oak tree derw = oak trees |
| Old Breton | dar / daeru = oak |
| Breton (Brezhoneg) | derv = oak |
Etymology: from the Proto-Indo-European *dóru (tree) [source].
Words marked with a * are reconstructions.
Sources: Wiktionary, Am Faclair Beag, teanglann.ie, On-Line Manx Dictionary, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Dictionnaire Favereau
