key command > look up highlighted word? Is there a keycommand for looking up a highlighted word on macos? Without the mouse, no hovering.
I am using vimium when browsing the web and would like to be able to look up highlighted words without ever having to touch the mouse.

(macOS Mojave)

Thanks,
// H
I think this is a default - you can double check in System Prefs > Keyboard > Shortcuts > Services…

 Opt ⌥   Shift ⇧   D  will 'Look Up in Dictionary'