Fierce woman seeing sailor repeatedly (6)
I believe the answer is:
tartar
'fierce woman' is the definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'sailor repeatedly' is the wordplay.
'sailor' becomes 'tar' (tar is a kind of sailor).
'repeatedly' shows that letters should be duplicated.
'tar' doubled is 'TARTAR'.
'seeing' is the link.
Can you help me to learn more?
(Other definitions for tartar that I've seen before include "Unpleasant sort" , "She terrifies" , "Crusty deposits on teeth" , "Cold sauce, popular with fish" , "ancient Mongolian" .)