Proto-IE: *bhōw-
Meaning: strong, numerous, swelling etc.
Old Indian: bhū́ri- `many, abundant, great, mighty', comp. bhū́yas-, bhávīyas-, sup. bhūyiṣṭha-
Avestan: būiri- 'reichlich, völlig, vollkommen', comp.-adv. baiyō 'länger, auf länger als', sup. bōištǝm 'plurimum'
Armenian: boil, pl. gen. builch `Schar, Menge, Herde'
Old Greek: pl. phōíd-es, phoíd-es, phō̂i̯d-es f. `Brandblasen'; *phóo-n : tà phóa = eksanthḗmata Hsch.
Celtic: OIr bolach `papula'
Russ. meaning: сильный, многочисленный etc.
References: WP II 114 f
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