1) absoloutely wonderful and beautiful due to the fact that it is perfect
2) a light pastel green colour, traditionally given as a gift on Poofiful day (a day set aside for celebrating poofiful-ness)
'avril is such a poofiful person'
'these lillies are amazingly poofiful'
'i'm going to paint my room poofiful'
'poofiful is such a poofiful colour'