Definition of "SP"

SP

noun
countable and uncountable, plural SPs
1. (horse racing, chiefly Australia) Starting price.
  Quotations
  He was an atheist, a rationalist, a medical student of no great distinction, an SP punter, a singer of bawdy songs, an acknowledged expert in matters erotic.
  1985, Peter Carey, Illywhacker, Faber and Faber, published 2003, page 157
  It was the last time, too, when […] the races dominated the radio on Saturday afternoons and everyone had the number of an SP bookie.
  1998, David Malouf, A First Place, Vintage, published 2015, page 196
2. Selling price
3. (US, military, navy) Shore patrol
4. (law enforcement) state police
5. Slow play
6. (computing) service pack
7. (law enforcement) Abbreviation of superintendent.
8. (Scientology) Initialism of suppressive person.
9. (biochemistry) substance P
10. (firearms) Abbreviation of soft point.
11. State Park
12. (highways) Spur
13. (ice skating) Short Program
14. (Hong Kong) Initialism of sex partner.
proper noun
1. Initialism of São Paulo, A state of Brazil.