Married, we come to a dead end (3)
I believe the answer is:
wed
'married' is the definition.
(wed can mean married)
'we come to a dead end' is the wordplay.
'come to' says to put letters next to each other.
'end' indicates one should take the final letters.
The last letter of 'dead' is 'd'.
'we'+'d'='WED'
(Other definitions for wed that I've seen before include "Took in marriage" , "Unite closely" , "united" , "Espouse" , "Take in marriage" .)