n.plaything consisting of a toy clown that jumps out of a box when the lid is opened
英汉双解大词典
jack-in-the-boxTEM8(jack-in-the-boxes)
1.
N-COUNT(可数名词)
A jack-in-the-box is a child's toy that consists of a box with a doll inside that jumps out when the lid is opened. 玩偶盒; 打开盖子会有一个玩偶跳出来的盒子