Words for hazel (tree) (corylus avellana) in Celtic languages:
| Proto-Celtic | *koslos = hazel (tree) |
|---|---|
| Gaulish | corillus = hazel (tree) |
| Old Irish (Goídelc) | coll [kol͈] = hazel (tree) |
| Irish (Gaeilge) | coll = hazel (tree) |
| Scottish Gaelic (Gàidhlig) | coll [kɔul̪ˠ] = hazel (tree) calltainn [kaul̪ˠdɪn̪ʲ] = hazel tree |
| Manx (Gaelg) | coull = hazel (tree) |
| Welsh (Cymraeg) | coll [kɨ̞ɬ / kɪɬ] = hazel (tree), sapling, twig |
| Old Cornish | colwiden = hazel (tree) |
| Cornish (Kernewek) | koll = hazel (tree) |
| Old Breton | collin = hazel (tree) |
| Breton (Brezhoneg) | kelvez = hazel (tree) |
Words marked with a * are reconstructions.
Sources: Wiktionary, Am Faclair Beag, teanglann.ie, On-Line Manx Dictionary, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Dictionnaire Favereau
