What does « WʿĀ » mean in the Quran?

So he began [the search] with their bags before the bag of his brother; then he extracted it from the bag of his brother. Thus did We plan for Joseph. He could not have taken his brother within the religion of the king except that Allah willed. We raise in degrees whom We will, but over every possessor of knowledge is one [more] knowing.

That We might make it for you a reminder and [that] a conscious ear would be conscious of it.

And collected [wealth] and hoarded.

And Allah is most knowing of what they keep within themselves.