Virginal is an adjective. Its plain meaning is "like a virgin" — belonging to, or suited to, someone who has never had sex. But that plain meaning is not really how the word earns its living. In modern English, virginal is mostly used to describe a *look* or a *feeling*: pure, untouched, innocent, sometimes innocent in a way that seems a bit unreal. A virginal white dress, a virginal expression, virginal snow on a mountain nobody has climbed. So it stretches easily to things that have nothing to do with sex at all: land no one has farmed, a beach with no footprints, a brand-new notebook. The idea it carries is "no one has touched this yet." The tone is important. It is a literary, slightly old-fashioned word. When a writer uses it about a person, it often carries a small sting — it can suggest someone is being showily innocent, or that the innocence is a performance. So it is not simply a compliment, and it is not a neutral clinical word either. If you want the neutral fact about a person, English says "she is a virgin," not "she is virginal." You will also meet virginal as a noun, meaning the old keyboard instrument (see virginals). Same spelling, different job in the sentence.

處女般的、純潔未經世事的；（引申）未經觸碰的、原封不動的