Common street name (3)
'common street name' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for elm that I've seen before include "Hardwood tree" , "I branch out" , "Strange tree for Mel" , "Tree of the genus Ulmus" , "Timber tree" .)
(Other definitions for oak that I've seen before include "door at Oxford" , "Strong hardwood" , "Large tree" , "Grown acorn" , "Building timber" .)
'common street name' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for main that I've seen before include "one might expect tap water from it" , "Most important or greatest in size" , "Source of water" , "Dominant" , "Source of electricity" .)