Context Menu Dictionary
MOVED TO GITLAB https://gitlab.com/losnappas/Context-menu-Wiktionary
Wiktionary lives in the context menu.
A Firefox web extension. Requires FF57. https://addons.mozilla.org/en-US/firefox/addon/right-click-wiktionary/
To try it, clone or download the repository and head to about:debugging. Load the manifest.json as temporary addon.
Unlicence'd. Icons are from Wiktionary/Wikipedia and licensed under ????