alexandru_mg3 wrote:
> Ok. But the PIE word was a u-stem or was ended in *-w-o-?
The word is ONLY Slavic and Germanic, so the question is unanswerable.
The available evidence doesn't guarantee the PIE age of the word.
> Also what was the original genitive form?
I can only say that Szereményi's rule predicts *bH(o)rw-ós. This,
however, is not what we find in Slavic, where the distinction between
the two types of oblique stems has been abandoned for i- and u-nouns and
where we only find reflexes of gen.sg. *-éi-s and *-óu-s, respectively.
Even Vedic has some analogical variant forms, so that e.g. the gen.sg.
of <madHu> is <madHvah.> OR <madHoh.> OR <madHunah.>. In Slavic the
gen.sg. of *medU < *medH-u is always *medu, as if < *medH-ou-s.
Piotr