play, amuse oneself, enjoy oneself / spend one's time idle, do nothing / for an item not to be in use, be spare or idle

to jump, to prance, to hop, to bounce / of oil or water, to splatter / to explode (nuts or beans) / to be over, to end (of a show, performance, etc.)

child

park

to cause to jump up

child's naive mind, child's juvenile mind

plural of 子供: children

national park

a forest-park, arboretum

park that is designated by nation and maintained by prefecture (in Japan, 都(と)道(どう)府(ふ)県(けん) (todōfuken)) or other local government; quasi-national park