What is "sybo"

Usage examples of "sybo".

I need fresh air, he thought-but Jaris had returned, And the slender Sybo, her face absent-looking, ab-stracted, was pushing aside the drapery of another door.

As color began to return to his ashen lips, Kirk saw that Sybo had stepped to the altar, a dream-lost look on her face.

Let's assume that Sybo was a sensitive-that she did sense something evil in that room.