Rashi on Genesis 42:9/רש"י על בראשית מ״ב:ט׳

1אשר חלם להם WHICH HE HAD DREAMED OF THEM — להם means “about them”. He then knew that they (the dreams) were being fulfilled, for they (his brothers) had bowed down to him.

2ערות הארץ means THE NAKEDNESS OF THE LAND — from which side it might easily be conquered. Of similar meaning are, (Leviticus 20:18) “He hath made naked (הערה) her fountain”; (Ezekiel 16:7), “naked and עריה) bare”. Indeed all forms of this root ערה signify “uncovering”). Onkelos renders it by “the breach (בדקא) of the land”, similar to (2 Kings 12:6), “the breach (בדק) of the house”— the defective places in the house — but he was not particular to translate according to the wording of the text (i.e. literally).