So I hear this hold back conversation. What is considered a holdback?

1) A kid when she is 6 starts kindergarten late when a parent has no clue if he/she will be a dancer/athlete/musician?

2) A kid who's parents hold them back when they are 6-7th grade to possibly gain a in sports or any other activity.

I can see a little frustration by parents on two. But on one I really don't see how you can the kid was held back on purpose by parent.