ˈgrowing ˌpains noun [plural]

1. problems and difficulties that happen when an organization or system is new:
the growing pains of a new republic

2. pain that children who are growing feel in their arms and legs

[TahlilGaran] Dictionary of Contemporary English ▲

growing pains
the problems or difficulties of a new organization or activity.
Even highly successful businesses will have experienced growing pains in the early days.

[TahlilGaran] English Idioms Dictionary ▲

growing pains
n.
1. Pains in children's legs supposed to be caused by changes in their bodies and feelings as they grow.
The little girl's legs hurt, and her mother told her she had growing pains.
2. informal Troubles when something new is beginning or growing.
The factory has growing pains.

[TahlilGaran] English Idioms Dictionary ▲