Dictionary

jack–in–the–box

noun \ˈjak-ən-thə-ˌbäks\

: a toy that is a small box containing a clown or other figure which jumps up when the box is opened

plural jack–in–the–box·es or jacks–in–the–box

Full Definition of JACK-IN-THE-BOX

:  a toy consisting of a small box out of which a figure (as of a clown's head) springs when the lid is raised

First Known Use of JACK-IN-THE-BOX

1702
JACK-IN-THE-BOXES Defined for Kids

jack–in–the–box

noun \ˈjak-ən-thə-ˌbäks\
plural jack–in–the–box·es or jacks–in–the–box \ˈjak-sən-\

Definition of JACK-IN-THE-BOX for Kids

:  a small box out of which a toy figure springs when the lid is raised

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