The Proto-Indo-European word *hₐeid-
Word *hₐeid-
Meaning to swell
See also Proto-Italic: *aid(s)mn- ‘swollen’
Synonyms *bʰleu-, *pup-, teuh-, *bʰel-, *h₁engʷ-, k̂euh₁-

Comments
Mallory J.P. and Adams D. (2006)