I am an older adult who is starting to learn (more accurately, try to learn) Attic Greek. I am using the textbook by Dr. Mastronarde and am a little stuck with a word: ιερά. With the alpha ending, I at first thought it was a feminine gender. But then I reread that it means “offerings,” so now I am wondering if it is a neuter plural? If it is, would the singular be neuter?