What is the meaning of פ?

Pe, peh, fe, feh: the seventeenth letter of the Hebrew alphabet, after ע and before צ.

The numeral 80 in Hebrew numbering.

Used alone (in normal, not final form) to mark the end of a petuhah.

Abbreviation of פֹּעַל / פועל (pó'al, verb): v.

Source: wiktionary.org