בויבעריק
'Boyberik, fictional town that represents Boyarka, a town twenty miles southwest of Kiev; also the name of a real town, Bibrka, in East Galicia (western Ukraine)'

ETYMOLOGY

Beider argues that the word must have been borrowed from Old Polish before the 16th c. while the vowel of Bóbrka was still long /oː/.
Polish Bóbrka

BO'YBERIK [Yiddishland, Paul Glasser]

CENTRAL

bójbəʀɩk {POLAND, Wolbrom, 50196}

AUDIO Isaac Bashevis Singer [Leoncin, Radzymin, Warsaw, POLAND], 1978
איך וויל פֿאָרן קיין בויבעריק, פֿאָר איך אַוועק קיין יהופּעץ 'I want to travel to Boiberik, but I travel away to Yehupets'