It is sometimes hard to identify Welsh words in isolation because of a number of linguistic processes that can affect a word depending on the surrounding sounds. My guess for this word is that it is 'bard' or 'poet' (Welsh 'bardd' or 'beirdd') with 'yn' or something coming before it. If you gives a little more context, especially the imeediately preceding word, we can give you a definative answer.

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Note added at 1 hr 22 mins (2003-10-10 23:00:17 GMT)
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I should say though, that I think you are right that it is Welsh.

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Note added at 1 day 7 hrs 45 mins (2003-10-12 05:24:04 GMT)
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For more on the relationship of m/b in Welsh see:

http://www.madog.org/dysgwyr/readings/reading01.html