The Woman in White garners Grand Cross (6)
I believe the answer is:
bridge
'cross' is the definition.
(bridging is a kind of crossing)
'the woman in white garners grand' is the wordplay.
I cannot quite see how this works, but
'grand' could be 'g' (synonyms) and 'g' is found within the answer.
'woman' could be 'de' and 'de' is found in the remaining letters.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for bridge that I've seen before include "Hard ridge on the nose" , "Span of popular card game" , "Game; cross (river)" , "Spanning structure to allow passage" , "support for strings" .)