The Proto-Indo-European word *h₂ek̂-
Word *h₂ek̂-
Meaning pointed, sharp
See also Tocharian A: akäts ‘sharp, pointed’
Proto-Italic: *ākri ‘sharp’
Proto-Italic: aku- ‘sharp’
Synonyms *h₁edʰ-, *k̂ent-, *saiwos

Comments
Gk. akros, Lat. ācer, Skr. aśris, OCS ostrŭ, Russ. ost'; ostryj, Ir. aicher/, Lith. aštrus, Ltv. asmens, Goth. ahs, Pers. /ās, Gaul. Akrotalus, Welsh eithiw, Oscan akrid, Umbrian peracri, Arm. asełn/aseġ/aseġ, Alb. athët, Toch. āk/āke, Eng. ecg/edge, ON egg, Gm. egga/Ecke, Polish ostry, XMK akrounoi