Line of approach for one with a broken leg (5)
I believe the answer is:
angle
'line of approach' is the definition.
'angle' can be an answer for 'approach' (both can mean a way of looking at something). I'm not certain of the 'line of' bit.
'one with a broken leg' is the wordplay.
'one' becomes 'an' (an apple is one apple).
'with' is a charade indicator (letters next to each other).
'a broken' indicates anagramming the letters.
'leg' anagrammed gives 'gle'.
'an'+'gle'='ANGLE'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for angle that I've seen before include "Old English settler" , "Germanic invader" , "Fish with hook and line" , "Fish; viewpoint" , "Opinion" .)