Fix pocket on the bottom of legwear (5,4)
I believe the answer is:
tight spot
'fix' is the definition.
(I've seen this before)
'pocket on the bottom of legwear' is the wordplay.
'pocket' becomes 'pot' (as in to pot or pocket a ball in snooker).
'on the bottom of' says to put letters next to each other (in a down clue, some letters go below others).
'legwear' becomes 'tights' (tights are a type of legwear).
'pot' put after 'tights' is 'TIGHT SPOT'.
(Other definitions for tight spot that I've seen before include "Fix" , "Difficult situation" , "predicament" , "hole" .)