Woman finds queen transparent (5)
I believe the answer is:
sheer
'transparent' is the definition.
(I know that transparent can be written as sheer)
'woman finds queen' is the wordplay.
'woman' becomes 'she' ().
'finds' means one lot of letters go next to another.
'queen' becomes 'ER' (abbreviation for Elizabeth Regina).
'she'+'er'='SHEER'
(Other definitions for sheer that I've seen before include "Very thin and fine" , "Unmitigated; perpendicular" , "Complete" , "Plumb" , "Absolutely - fine - straight up" .)