Where does “beben” come from?

beben (Galician) comes from Galician beber, from Old Portuguese beber, from Latin bibere, from Latin bibō, from Latin -ilis, from Proto-Italic -elis, from Proto-Indo-European -elis, from Proto-Indo-European -lós — Forms agent nouns from verbal roots.

beben (Galician): third-person plural present indicative of beber