Unusual ladders around square stand with legs far apart (8)
I believe the answer is:
straddle
'stand with legs far apart' is the definition.
I can't judge whether this definition defines the answer.
'unusual ladders around square' is the wordplay.
'unusual' indicates an anagram.
'around' indicates putting letters inside.
'square' becomes 'T' (a T-Square is a technical drawing instrument).
'ladders' with letters rearranged gives 'sraddle'.
'sraddle' going around 't' is 'STRADDLE'.
Can you help me to learn more?
(Other definitions for straddle that I've seen before include "Have one leg on each side of" , "Stand with legs wide apart" , "Bestride" , "hedge" , "Stand across" .)