A meadow is a grassy open fieled :)
A tract of grassland used for pasture or serving as a hayfield. or A tract of grassland in an upland area near the timberline
A meadow is a field vegetated primarily by grass and other non-woody plants (grassland). It may be cut for hay or grazed by livestock such as cattle, sheep or goats
I believe it is cool moist and sunny since there are not that many trees to make it too warm
Route 210, you'll need Surf and Waterfall to get it apparently. Other than that, I know no specifics.
I think it's the owner of the meadow.