1. Of biological parents not married to each other
   - illegitimately 
2. Of unwed parents
   "he was born out of wedlock"
   - outside marriage

Encyclopedia: Out of wedlock

• dressing sack
• dressing sacque
• dressing station
• dressing table
• dressmaker
• dressmaker's model
• dressmaking
• dressy
• Drew
• drey
• Dreyfus
• drib
• dribble
• dribbler
• dribbling
• driblet
• dribs and drabs
• dried
• dried apricot
• dried fruit
• dried milk
• dried-out
• dried-up
• drier
• drift