The name "Eiddwen" is Welsh in origin and may be spelled differently depending on the dialect. In Welsh phonetic transcription, the word is written as /ˈaɪðwɛn/. The first syllable is pronounced as the vowel sound "ai" in "rain", followed by the "th" sound in "bathe". The second syllable is pronounced with the sound "w", followed by the short "e" sound in "let", and finally the "n" sound. Despite variations in spelling, the pronunciation remains consistent.
The word "Eiddwen" is a Welsh name of Celtic origin. It is derived from the combination of two elements: "Eidd", which means "an arrow", and "wen", which means "white" or "fair". Therefore, the name "Eiddwen" roughly translates to "fair arrow" or "white arrow" in English.