A danseuse, to bear all in dance! (9)
I believe the answer is:
ballerina
'a danseuse' is the definition.
('ballerina' can be a synonym of 'danseuse')
'bear all in dance' is the wordplay.
'dance' indicates anagramming the letters.
'bear'+'all'+'in'='bearallin'
'bearallin' is an anagram of 'BALLERINA'.
'to' is the link.
(Other definitions for ballerina that I've seen before include "agile performer" , "Female dancer, could be prima" , "girl on point duty" , "Female classical dancer" , "lass good at splits?" .)