mothball
n
1 small ball made of a strong-smelling substance, used for keeping moths away from stored clothes 卫生球; 樟脑丸.
2 (idm 习语) in `mothballs stored and not used for a long time 封存不用
old aircraft kept in mothballs 封存的旧飞机.
🗣️ 情景例句
She's come up with a new idea for increasing sales.