Make clear cross can straddle large drive (10)
I believe the answer is:
illustrate
'make clear' is the definition.
(thesaurus)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for illustrate that I've seen before include "Ornament" , "picture" , "Give as example" , "Explain with pictures" , "Exemplify" .)