jack-in-the-box

n (pl -boxes) toy in the form of a box with a figure inside that springs up when the lid is opened 玩偶盒（开盒盖时其中的玩偶能跳起）.

itinerary, ITN, its, itself, ITT, ITV, IUD, ivied, ivory, ivy, Ivy League, J, J, j, jab, jabber, jabot, jack, Jack Frost, Jack tar (also tar), jack-in-office, jack-knife, jack-o-lantern, jack-rabbit, jackal, jackanapes, jackass, jackboot, jackdaw, jacket, jackpot, Jacobean, Jacobite, Jacuzzi, jade, jaded, jag, jagged, jaguar, jail, jalopy,