She answered the phone and, to her great 'joy', heard her son's voice on the line. [=she felt very happy when she heard her son's voice]
“You've spent hours looking for it. Any 'joy'? [='luck']” “No 'joy' whatsoever, I'm afraid. I can't find it.”
They were 'shouting/jumping for joy'. [=they shouted/jumped because they were very happy]
(..) Brother, I've been away a long time. If I come back now, believe me, it's important. I want to give you this. I've done a lot of work with this. It would give me nothing but joy to know it was in your hands and lay forever idle. I'll speak to my people, find out what I can. Thank you. (..)2016 Ben-Hur