In the Navigation Pane, click Lexicon, and then click Lexicon Edit.
In the Entries pane, click the entry that has the picture you will delete.
In the Entry pane, click any of the picture field labels (Picture, Thumbnail, Caption or File) for the picture you will delete.
A menu button (
) appears.
Click the menu button, and then select Delete Picture.
The Delete Picture warning box appears.
Click Delete.
The picture and its associated fields (Picture, Thumbnail, Caption and File) are removed from the lexical entry. However, any copy of the picture remains in your Pictures folder.
Manually delete any pictures that you will never use or that others should never see.