わっぱ

Noun

 * 1) a wheel
 * 2) a circular or round object
 * 3) a rounded wooden bento box or similar box
 * 4)  a pair of handcuffs

Etymology 2
Cognate with.

Noun

 * 1)  a child
 * 2) child, kid, boy
 * 3)  a young servant

Adverb

 * 1)  yelling loudly