What I was told many yonks ago, while drinking at a local pub in East London, that a quiff is...well considering this isn’t the Sick thread... a ‘promiscuous woman’.
I asked what it was after a real Pom remarked to his mate (also a real Pom) “Cor that’s a nice bit of quiff innit!” or words to that effect.
Edit: yes. What Boac said.
A Quiffe, as it’s poofingly spelt, was known affectionately in Oz as a Love Puff.