Crossword Genius

Aim's tan: perhaps endurance needed! (7)

Ross

I believe the answer is:

stamina

I'm a little stuck... Click here to teach me more about this clue!

'endurance needed' is the definition.
I can't tell whether this defines the answer.

'aim's tan perhaps' is the wordplay.
'perhaps' indicates anagramming the letters.
'aims'+'tan'='aimstan'
'aimstan' anagrammed gives 'STAMINA'.

Can you help me to learn more?

(Other definitions for stamina that I've seen before include "Ability for sustained effort" , "Resilience" , "Endurance, strength to stay the course" , "Staying-power, endurance" , "Indefatigability" .)

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