I was reading this Pacific Mythology book and bumped into something that
may help further clarify (or confuse) the issue of the meaning of Lua in
Hawaiian.
Search Google for "hawaiian dictionary lua", and click on the link that
has the Hawaiian-English Google Book. It shows more clearly the meanings
of Lua.
'Toilet' seems to be modern usage, and hole/cave thing seems to be the
original meaning. [...]
If we search for "hawaiian lua" (without "dictionary") we get lots of
stuff about a martial art called Lua. Do you (or someone else) know how
this other meaning fits in? (They do not seem to worry about fighting a
style called "toilet" ;)
-- Roberto