Aim of mountaineering clubs attracting member ... (5)
I believe the answer is:
climb
'aim of mountaineering' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'clubs attracting member' is the wordplay.
'clubs' becomes 'c' (abbreviation used in card games such as bridge).
'attracting' means one lot of letters go next to another.
'member' becomes 'limb' (member can mean a limb).
'c'+'limb'='CLIMB'
Can you help me to learn more?
(Other definitions for climb that I've seen before include "mountaineer's intent?" , "Ascend, escalate" , "Soar" , "Use hands and feet to rise" , "increase" .)