Athlete and climber (6)
I believe the answer is:
runner
This could be a double definition.
'athlete' is the first definition.
(I know that runner is a type of athlete)
'climber' is the second definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps you can see a link between them that I can't see?
'and' acts as a link.
Can you help me to learn more?
(Other definitions for runner that I've seen before include "Type of bean for an athlete?" , "Harrier" , "Sprinter" , "Smuggler; a bean" , "Old policeman" .)