Definition of "poof"

Even now, in the spring, the river softly cries, 'Menthol, Menthol, you are one wazoo. One day I'm the elf next door and the poof I'm a river.'

1969, Beard & Kennedy, Bored of the Rings, page 87

The greatest trick the Devil ever pulled was convincing the world he didn't exist. And like that, poof. He's gone.

1995, Christopher McQuarrie, The Usual Suspects (motion picture), spoken by Verbal (Kevin Spacey)

He's a figment of your subconscious Eric, not mine, so I tapped into Ultimate Reality and poofed him out.

2019, Justin Blackburn, The Bisexual Christian Suburban Failure Enlightening Bipolar Blues, page 22

He recalls how everybody got called a ‘poof’ at Forrester High School in the seventies. Back then, only ‘wanker’ possibly rivalled it as the most common term of abuse. But The Poof was the Poof.

2015, Irvine Welsh, A Decent Ride‎, Random House, page 21