Proto-IE: *k(')em-er/n-
Meaning: sky, cloud
Hittite: kammara- c. 'Wolke, Dunst, Qualm, Rauch' (Tischler 472-473 without convincing etymologies)
Russ. meaning: небо, облако
References: [Different in Pokorny]
Comments: Cf. *akm- (/-k'-) 'stone, rock, (heaven, cloud)' #24
piet-prnum,piet-meaning,piet-hitt,piet-germ,piet-rusmean,piet-refer,piet-comment,