There is no specific meaning. ※。 In the title, "Definition a※b=2a+3b" means that when there is this symbol between A and B, the result of a※b is 2a+3b.

There seems to be something wrong with your topic. Let me give an example!

4※5=2*4+3*5=23, just replace it!

Note: * stands for multiplication, in case you don't know, hehe ~ Come on!