Meaning of P in English
p. ( also p British English )
1 . the written abbreviation of page ⇨ P.P.
2 . British English the abbreviation of penny or pence :
The bus fare was only 50p.
3 . used in written music to show that a part should be played or sung quietly
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012