i Register
In some senses, bso is marked as obsolete, derogatory, slang. Watch for register when choosing this word.
bso
noun 5
Definitions
noun
1
Blue stellar object: a radio-quiet quasar.
2
British school overseas.
3
Initialism of bicycle-shaped object, used to refer to cheaply-made, low-quality bicycles.
4
bright shiny object
5
Initialism of bilateral salpingo-oophorectomy.
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