JACK-IN-THE-BOX Meaning of JACK-IN-THE-BOX in English jack-in-the-box BrE AmE ˈdʒæk ɪn ðə ˌbɒks § ˈ• ə n- AmE -ˌbɑːks▷ jack-in-the-box|es ɪz əz Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012