May be related to Av. vīš 'bird' < PIE. *h₂eu-i-. Alternatively, may be from a Proto-Baltic term meaning 'house, settlement' (cf. Skt. viç- 'house' ): thus the sense changes from '(relating to) the house, the settlement', to 'domestic (animal)' and finally to 'chicken' (KK, CDB)., Perhaps as orig.'house-bird', cf. Skt. viç- 'house' (CDB).
Buck, C., D. (1949). A dictionary of selected synonyms in the principal Indo–European languages: a contribution to the history of ideas. Chicago: University of Chicago Press.
Karulis, Konstantīns (2001). Latviešu etimoloǧijas vārdnīca. Rīgā: Avots
Robert Farren, PIE culture words collection, 2017
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