a wheel / a circular or round object / a rounded wooden bento box or similar box / (slang) a pair of handcuffs

(archaic) a child / child, kid, boy (used in scolding a child or male person) / (archaic) a young servant

Alternative form of 輪っぱ

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

park

a forest-park, arboretum

national park

parkway

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

(figuratively) being carefree and unaware of an imminent danger