Legendary queen titillates the royal guards (6)
I believe the answer is:
esther
'legendary queen' is the definition.
'esther' can be an answer for 'queen' (I have seen 'Queen of Persia' mean 'esther' so perhaps 'queen' could also mean 'esther'). I'm not certain of the 'legendary' bit.
'titillates the royal guards' is the wordplay.
'guards' says the answer is hidden in the clue.
'ESTHER' is hidden in the letters of 'titillates the royal'.
Can you help me to learn more?
(Other definitions for esther that I've seen before include "OT heroine" , "Beautiful lady" , "There's a girl from the Old Testament" , "Old Testament queen" , "Section of Bible" .)