An optical illusion where, when a diagonally striped pole is rotated around its vertical axis (horizontally), it appears as though the stripes are moving in the direction of its vertical axis (downwards in the case of the animation to the right) rather than around it.

plural of barber pole illusion

Third-person singular simple present indicative form of keep it on the barber pole

present participle of keep it on the barber pole

simple past tense and past participle of keep it on the barber pole

An unlicensed performer of abortions; backstreet abortionist

Do not seek advice from a biased party.

(music) A group of four musicians who sing barbershop music. Usually contains high and lead tenors, baritone and bass.

plural of barbershop

Third-person singular simple present indicative form of barbershop