It is translated aa "Patience" but is is not.
"Gaman" means you surpass your feelings for something.
I don't think there is a word for t in English.
You tell your child not to cry by saying がまんしなさい "Gaman Shinasai".
When you are in pain and when there is nothing can be done ... You say がまんしてください。
It is a very Japanese concept not to show how hurt you are.