Proto-IE: *bhela-

Nostratic etymology:

Meaning: light, bright

Old Indian: bhāla- n. `splendour, lustre; forehead, brow'

Armenian: bal `Blässe, Bleichheit'

Old Greek: phaló- 'white' Hsch., phalió- `hell, weissfleckig', phálǟro- `weissfleckig', phalakró- `kahlköpfig, rund und glatt', phálantho- `kahlköpfig, kahl'

Slavic: *bēlъ(jь)

Baltic: *bal-a- adj., *bal̂- vb. itr., *bal̂-t-a- (1) adj., *bāl-a- (2) adj.

Germanic: *bal-an- m., *bēl-a- n.

Celtic: Gaul Belenos PN; *balla > Fr baille Blässe; OIr bel-tene `der 1. Mai, an welchem die heidnischen Iren Feuer anzündeten und Vieh hindurch jagten', MIr ball `Fleck'

Albanian: balε Stirn

Russ. meaning: светлый, блестящий

References: WP II 175 f