I installed an English/Welsh dictionary app. I think I must have uninstalled it because when I click on the app it says : the linked programme is no longer installed on your phone.

How do I remove the app symbol please?

 

Thanks for suggestion.
I did this and symbol grew bigger and on top of screen info said drag to empty screen to see options. I did and a dustbin symbol appeared on bottom of screen so I dragged it there and it vanished.
However when I went back to the screen with all the apps it had returned! I tried several times but same result.

 

I have no idea what a "launcher" is!
All I did was remove the original sd card and it's contents and upgraded to a 16gb card.

Thanks for the suggestion.