koy-

Tocharian A

Etymology

From Proto-Tocharian *koy (whence also Tocharian B koyn (“mouth”)), from Proto-Indo-European *ǵʰh₂óyu (“gape”, noun), from the root *ǵʰh₂ey-, extended from the original root *ǵʰeh₂- (“to open wide, gape, yawn”). Compare Latin hiō (“I stand open; I gape, yawn”), Lithuanian žióju (“I open”), Proto-Slavic *zijati (“to be open; to gape”), Old English ġinian (“to gape, yawn”).

Noun

koy-

  1. (anatomy) mouth
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