What is definition of blight? 

“Alice laughed. ‘There’s no use trying.’ she said. ‘One can’t believe impossible things.’” “‘I daresay you haven’t had much practice,’ said the Queen. ‘When I was your age, I always did it for half-an-hour a day. Why, sometimes I’ve believed as many as six impossible things before breakfast…’” - Lewis Carroll, Through the Looking Glass [...] [...]