Why was India's strikes on Pakistan, PoK named ‘Operation Sindoor’?

Under Operation Sindoor, India carried out precise strikes on nine terror hideouts, four in Pakistan and five in Pakistan-occupied-Kashmir.

Why was India's strikes on Pakistan, PoK named ‘Operation Sindoor’?
Under Operation Sindoor, India carried out precise strikes on nine terror hideouts, four in Pakistan and five in Pakistan-occupied-Kashmir.