In MacOS, it is very convenient to look up a word that you meet almost anywhere. As introduced at the following page:
It is very useful for people who don’t use English as native language and had excerpted contents in his notes.
Thanks for the reminder from @den
This function is naturally supported when the touch pad is used.
However, if the touch pad is not accessible, for example, when people use external monitor, keyboard and mouse, hope the Obsidian for Mac can support invoking this useful function by provide an option in the context menu.