Delate

To enlarge; to make bigger.

"The eye doctor put drops in my eye to dilate the pupil so he could see the nerve better."

To become wider or larger; to expand.

"His heart dilates and glories in his strength."

To speak largely and copiously; to dwell in narration; to enlarge; with "on" or "upon".

To use a dilator to widen (something, such as a vagina).