Either a semantic variation of *polъ via the specialization “half of suit/dress” → skirt or derived from *polti (“to twine, to wind, to lace”).
*pola f
singular | dual | plural | |
---|---|---|---|
nominative | *pola | *polě | *poly |
genitive | *poly | *polu | *polъ |
dative | *polě | *polama | *polamъ |
accusative | *polǫ | *polě | *poly |
instrumental | *polojǫ, *polǫ** | *polama | *polami |
locative | *polě | *polu | *polasъ, *polaxъ* |
vocative | *polo | *polě | *poly |
* -asъ is the expected Balto-Slavic form but is found only in some Old Czech documents; -axъ is found everywhere else and is formed by analogy with other locative plurals in -xъ.
** The second form occurs in languages that contract early across /j/ (e.g. Czech), while the first form occurs in languages that do not (e.g. Russian).