Missing translation for "natural=wood" in pt_BR

[naoliv]

I was seeing that natural=wood multipolygons are translated as madeira in Portuguese (which is wrong for this case; it has a different meaning).

Looking at ​Launchpad I saw only one place where we can translate wood:

Since there isn't any other string translated as madeira, I guess that JOSM is also taking natural=wood from this same translation.

Another translation for wood (when used as natural=wood) is needed.