Proto-IE: *kar- (kh-)
Meaning: stone, thorn; hard, rough
Tokharian: A tsär `rauh'
Old Indian: khára- `hard, harsh, rough, sharp'
Other Iranian: NPers xār, xārā 'Fels, Dorn'
Armenian: khar `Stein, Fels'
Old Greek: krănăó- 'rocky, rugged (in Hom. always in Ithaka); hard; stinging'; kárkharo- `beissend, bissig, scharf, rauh'
Celtic: OIr carrac f., OCymr carrec `Fels, Stein'
Russ. meaning: камень (острый), колючка; острый, шероховатый
