stay on sth meaning
- [American slang]
1. to remain on something, such as a horse, road, stool, etc.
The first time I rode, I could hardly stay on the horse.
It was so slippery that I had trouble staying on the road.
2. to continue to pursue something.
I will stay on this problem until it is settled.
She stayed on the matter for weeks until it had been dealt with.