Woman across a bay, maybe, briefly (6)
I believe the answer is:
astrid
'woman' is the definition.
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for astrid that I've seen before include "girl abroad" , "Stir Da up about a Scandinavian woman" , "Scandinavian girl" , "foreign lady" .)