castanwydd

Welsh

From castan (“chestnut”) +‎ gwŷdd (“trees”).

(North Wales) IPA^(key): /kasˈdanwɨ̞ð/, [kʰasˈtanwɨ̞ð]
(South Wales) IPA^(key): /kasˈdanwɪð/, [kʰasˈtanwɪð], /kasˈdanʊi̯ð/, [kʰasˈtanʊi̯ð]

castanwydd f (collective, singulative castanwydden)

Welsh mutation
radical	soft	nasal	aspirate
castanwydd	gastanwydd	nghastanwydd	chastanwydd
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.