Get married (3)
'get married' is the definition.
(synonyms)
This is all the clue.
(Other definitions for wed that I've seen before include "Joined in the dew" , "Take in marriage" , "Took in marriage" , "Espouse" , "Married" .)
'get married' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for tie the knot that I've seen before include "Get hitched" , "Marry" , "Make a Windsor" , "Get married (informal)" .)