Regnant

In the context of Hindi, "reigning queen" can refer to both historical rulers and modern-day actresses. The Hindi word for "queen" is "Rani," derived from Sanskrit. This term can be used to refer to queens of Indian royal families, like Rani Chennabhairadevi, or even Bollywood actresses who are considered popular and influential, like Deepika Padukone. The movie "Queen" (2013) also uses the term "Rani" in the title, referring to the main character Rani Mehra. 

Here's a more detailed breakdown:

Historical Queens:

The term "Rani" is used to refer to female rulers in the Indian subcontinent and Southeast Asia, equivalent to "queen". Some examples include Rani Chennabhairadevi, who ruled for 54 years, and Razia Sultana, the only female ruler of the Delhi Sultanate. 

Modern-day "Queens":

In the context of Bollywood and popular culture, actresses are sometimes referred to as "queens" or "reigning queens" to highlight their popularity, influence, and talent. 

For example, Amazon UK refers to Deepika Padukone as a "reigning queen" of Bollywood in their book. 

The Movie "Queen":

The 2013 Hindi film "Queen" features the character Rani Mehra, who is portrayed as a strong and independent woman, and the title "Queen" highlights her journey of self-discovery.