Princess carried inside in other words (6)
I believe the answer is:
isolde
'princess' is the definition.
(legendary princess)
'carried inside in other words' is the wordplay.
'carried' becomes 'sold' (I can't justify this - if you can you should believe this answer much more).
'inside' indicates putting letters inside.
'in other words' becomes 'ie' (abbreviation for 'id est', 'that is' in Latin).
'sold' placed inside 'ie' is 'ISOLDE'.
Can you help me to learn more?
(Other definitions for isolde that I've seen before include "Lover of Tristan" , "Tristan and ... (Wagner opera)" , "heroine (sic)" , "love potion drinker" , "Soiled like Tristram's love" .)