Open in AppCenter
You can view and install this app from AppCenter on elementary OS, or you can preview the listing here.
QuickWord can be used by manual lookup and via a keyboard shortcut to open it on the fly.
Select a word and hit the ⌘ + Ctrl + D shortcut to get the word lookup.
Get QuickWord and more on elementary AppCenter, the open, pay-what-you-want app store for indie developers. Every app is open source and has been reviewed and curated by elementary to ensure a native, privacy-respecting, and secure experience.