Encara no tenim significats per a "furr up".
1He was all furred up into a warm and comfortable looking ball.
2'I took a look at an artery and found it pretty furred up.
3Keep yourself fit, stop your arteries furring up from all those rich dinners your wealthy clients keep treating you to.'
4It leads to blood vessels furring up, becoming easy to block, which fatally starves the heart or brain of oxygen.