Proto-IE: *ok(')-
Meaning: sharp
Old Greek: ókri-s m. `Spitze, scharfe Kante, Ecke', okrí-bās `erhöhter Platz, Gerust, Tribüne'; oksǘ- `scharf, stechend', óksos n. `Weinessig'
Latin: ocris, -is m. `steiniger Berg'; mediocris, -e `mittelmässig, nicht sehr gross; unbedeutend; gemassigt, genügsam', medioximus `der mittelste'; ?? ocrea f. `Beinschiene'
Other Italic: Umbr ukar, ocar `arx, mōns'
Celtic: MIr ochar `Ecke, Rand', Cymr ochr, ochyr `Rand'; *okulēnā: OCymr ocoluin `cos', NCymr agalen, hogalen; *hākulēnā: NBret higolen `Wetzstein'
Russ. meaning: острый
References: WP I 28 f
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