Is this what you mean? If you right-click on a word you'll see a menu with the following options including Dictionary & Speech. (The second screen capture is from the Dictionary search.)
You can then make a screen capture with the following keystrokes: Command-Shift-4 then Space bar.
what I am looking for a dictionary software that have acapela TTS or can be associated with acapela TTS. for the best, it is able to automatically show annotation in a small new window beside mouse (not the software main window) when mouse stop on word.