Proto-Baltic: *ǯwir̃žd-a- c., -ia- c., -iā- f.
Meaning: gravel
Lithuanian: žvir̃gžda-s 'grober Sand, Kies', žvirgždē 'kiesiger Boden, kiesige Stelle'
Lettish: zvìrgzds, zvir̂gzda2, zvirgzde 'Kieselstein', pl. zvirgzdi, zvirgžn̨i, zvìrgzdis 'Kies, Grand, grober Sand'
Comments: Cf. also Lith. žvī̃ras 'гравий' (Lyberis); žvìzdras 'мелкий гравий', žvìzdrē 'плохая гравелистая почва' (Lyberis) - contamination with *ǯeĩs-r- ?