--- In cybalist@..., Piotr Gasiorowski <piotr.gasiorowski@...>
> It's Scandinavian *vaku < *wako: (strong f.) 'hole or channel in
the ice' and its family (borrowed into English, German, Dutch and
Frisian), perhaps related to Germanic *wak- 'be awake, watch, etc.'
and to *wak-s- 'grow', and hence to PIE h2weg^- 'increase, rise, be
strong' (nomen omen, a vast etymological cluster). The connection of
the maritime semantic extension with the rest of this word-family
is "not impossible", according to the OED, if the freeing of the
water from ice is regarded as "awakening".
A wake after after a ship can be phosphorescent, in Danish known
as /mor-ild/. If the ice breaking, coming up from the water, making a
luminous trail is connected to the sun instead, this bushy semantic
cluster become even less impossible. Some Scandinavian rock carvings
depict ships carrying symbolic images of the sun (sun wheel). Stone
solar images have been found here too.

PIE *weg^- 'float' is unknown to me.
> Piotr
Falk & Torp continue:
IE root *veg^- in Greek hugrós "humid, fluid", Lat. uvidus "humid,
wet", Old Irish fúal "urine" (from *voglo-). Extended root *vegs,
*ugs: see ox.
I assumed /g^/, not /g'/, on no grounds whatsover; Falk & Torp supply
no satem cognates.