fop

Short definition from Wiktionary

Noun

1. 1
   A vain man; a dandy.
2. 2
   Initialism of form of payment.
3. 3
   Initialism of freedom of panorama.
4. 4
   Initialism of fibrodysplasia ossificans progressiva.
5. 5
   Initialism of flyover people: individuals who reside between the two coasts of the US, with the exception of a few major cities.

Proper noun

1. 1
   Initialism of Fraternal Order of Police.

Adjective

1. 1
   Initialism of free of payment, delivery of securities with no corresponding payment of funds.