The text discusses the question of Polish and Eastern Slavic origin of the words: (h)uzer, uzior ‘lower part of a sheaf of corn’, huzica ‘bird's rump’, huzno ‘bird's rump’. The relic forms of words * gǫzyrь, * gǫzerь with a nasal vowel can be found in the dialects of Southern Borderlands and in Chełm region. In this area they were originally shared by Polish and Ruthenian languages. Forms containing u: * guzуrь, * guzerь appearing in the Polish language should be ascribed to the mutual impact of Ruthenian languages, even though they may have been originally Polish, too. The influence of the Ruthenian language is evident in the commonplace h‑ (< g) in word‑initial position, e.g. huzno, huzica, huzer, huzir, etc., as well as in infrequent shift towards u̯ and v, e.g. u̯uźor, u̯uźoro, vuźur. The occasional g in Eastern Slavic vernacular languages of the Białystok region – guzerye, due to the opaque formation, does not seem a manifestation of phonetic Polonization.