English: It was taught: “Virgin” means a na’arah, and so it says “And the maiden was very beautiful, a virgin.”
On the daf / in context: The term betulah in legal contexts (e.g., whom a Kohen Gadol may marry) is defined as a na’arah rather than a minor or a bogeret; the verse supplies the linguistic support.
Type of Learning
Custom (Bavli — definition of betulah as na’arah)
What Is Learned
In Torah law “betulah” refers to a na’arah; the description of Rivkah as both “na’arah” and “betulah” anchors that definition.