enlarge -- (make larger; "She enlarged the flower beds")
blow up, enlarge, magnify -- (make large; "blow up an image")
enlarge -- (become larger or bigger)
elaborate, lucubrate, expatiate, exposit, enlarge, flesh out, expand, expound, dilate -- (add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing; "She elaborated on the main ideas in her dissertation")