How to use dictionary look up on websites that prevent it?

Solution 1:

Assuming I understand your question correctly, you should be able to use the context menu to select the Look Up option.

More specifically:

  1. In your browser double-click on a word to select it
  2. Then right-click (or use ctrl+click) to bring up the context menu (e.g. if you double-click on the word house to select it and then right-click on it, you'll see a context menu such as:

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  1. From this menu you can select the top Look Up option and then you'll get the dictionary definition.