ետր

As has been correctly noticed by J̌ahukyan, from Ancient Greek ἑταίρα (hetaíra, “hetaira; courtesan, prostitute”).

ետր • (etr)

1. prostitute

Attested only in Baṙgirkʻ hayocʻ.

• բոզ (boz)

• ետրոնին (etronin)

• Eremia Meġrecʻi (1698) “ետր”, in Baṙgirkʻ hayocʻ [Armenian Dictionary] (in Armenian), Livorno: Sargis Evdokiacʻi Sahetʻči Press, page 90
• Ačaṙean, Hračʻeay (1973) “ետր”, in Hayerēn armatakan baṙaran [Armenian Etymological Dictionary] (in Armenian), 2nd edition, a reprint of the original 1926–1935 seven-volume edition, volume II, Yerevan: University Press, page 33b
• J̌ahukyan, Geworg (1963) “Stugabanutʻyunner [Etymologies]”, in Patma-banasirakan handes [Historical-Philological Journal]‎ (in Armenian), number 4, Yerevan: Academy Press, pages 90–91
• J̌ahukyan, Geworg (2010) “ետր”, in Vahan Sargsyan, editor, Hayeren stugabanakan baṙaran [Armenian Etymological Dictionary] (in Armenian), Yerevan: Asoghik, page 219a