Rask Ask Urban Dictionary about Rask Share definition Flag To scratch. Anglicised version of the Spanish word "rascar". Commonly used in north London (specially in N1 postcode) "Dude, stop rasking yourself! People will think you have herpes..." Rask by rami.alpha August 5, 2016 0 0 Rask Merch Get the Rask mug. Buy Now — $32.95 See more merch