BSO

noun5

1. •
   bright shiny object
2. •
   British school overseas.
3. •
   (slang, disapproving) Initialism of bicycle-shaped object, used to refer to cheaply-made, low-quality bicycles.
4. •
   Initialism of bilateral salpingo-oophorectomy.
5. •
   (no longer used) Blue stellar object: a radio-quiet quasar.