Moshe's Ethiopian Wife

The verse: Miriam and Aaron began to talk against Moses because of his Ethiopian wife, for he had married an Ethiopian woman.

Rashi: Tziporah wasn't really Ethiopian. Miriam and Aaron were just speaking in code. What they meant was that she was like, totally, beautiful.
Rashbam: Moshe took an Ethiopian wife during his long exile from Egypt, prior to the encounter with the burning bush:
Ibn Ezra: Tziporah wasn't Ethiopian, but Miriam and Aaron were not speaking in code. Euphemistically, they were saying that she was ugly, and that Moshe had therefore separated from her.


Related
What my kids said
What mephorshim say
What Josephus said

Search for more information about the Isha Cushis at 4torah.com.