tooth fairy

1. N-COUNT The tooth fairy is an imaginary creature. A child whose tooth comes out is told that if they put it under their pillow, the tooth fairy will take it away while they are sleeping and leave a coin in its place. 牙仙; 大人告訴孩子把脫落的牙齒放在枕下，牙仙會在他們睡著時把牙齒取走，畱下硬幣的故事[usu 'the' N in sing]

It has vanished as surely as one's belief in Santa Claus or the tooth fairy. 毫無疑問，人們對於聖誕老人或牙仙的信仰已經消失了。