Add a button in the control panel that opens an editor dialogue. This should allow the user to add the following information:

• String to add/edit ("word"), required.
• Language, defaulting to the page language.
• Transcription (with IPA input or just copy paste)
• Sentence where the word appears. The word should be highlighted in some way to make it easier to find and to avoid possible ambiguity. This can probably be done with wiki text markup, e.g. bold.
• More information that can be relevant.

This should use OOUI, if possible.