Is the Sith a girl?

Could you please clarify for me, is the term 'Sith' being used in reference to a specific individual, and if so, are they being described as a girl? I'm asking because in many cultures and contexts, gender terminology can be nuanced and may not always align with traditional binary categories. It's important to ensure that we're accurately portraying individuals, especially when discussing them in public forums. Thank you for your attention to this matter.