Reconstruction:Proto-Indo-European/welH-

Evidence from Indo-Iranian (whence Sanskrit उल्ब (úlba)), with atypical *b, might suggest a borrowing or a later innovation within the branch.

Also reconstructed without the laryngeal as *wel-.

*welH-

1. to turn, to wind ('to turn coils')

• *wl̥H-mí-s (“wave”)
  • Indo-Iranian: *wr̥Hmíš (see there for further descendants)
• Unsorted formations:
  • Albanian: valle
  • Armenian:
    • Old Armenian: գելում (gelum), գիլ (gil), գալար (galar), գաղձն (gałjn), գեղձ (gełj), (possibly) գողտր (gołtr)
  • Balto-Slavic:
    • Baltic:
      • Latvian: vēl, velt
      • Lithuanian: vėl, velti
    • Slavic:
      • Russian: вал (val), валить (valitʹ)
  • Germanic:
    • Old English: gewealc, wealcan, wealcian, weallan, well, weall (see there for further descendants)
    • German: Walzer, walzen
  • Germanic: *waluz, *wiligaz (see there for further descendants)
  • Hellenic:
    • Ancient Greek: ἐλύω (elúō), εἴλω (eílō), εἰλύω (eilúō), ἕλιξ (hélix), εἰλεός (eileós), ἴλη (ílē), ὅλμος (hólmos)
  • Indo-Iranian: *úlbam
    • Indo-Aryan: *úlbam
      • Sanskrit: उल्ब (úlba)
  • Italic: *wolwumen, *wolwō, *wolgous, *wolwā (see there for further descendants)
    • Latin: valgus, vallis, vallum, valva, volumen, volvō, vulgus, vulva (see there for further descendants)

• Rix, Helmut, editor (2001) Lexikon der indogermanischen Verben [Lexicon of Indo-European Verbs] (in German), 2nd edition, Wiesbaden: Dr. Ludwig Reichert Verlag, →ISBN, pages 677
• Pokorny, Julius (1959) Indogermanisches etymologisches Wörterbuch [Indo-European Etymological Dictionary] (in German), volume III, Bern, München: Francke Verlag, page 1140ff