1. the son of one’s spouse from a previous relationship

Examples

• My stepson is coming to visit us this weekend.
• She has a good relationship with her stepson from her husband’s first marriage.
• The stepson inherited his father’s love of music.
• It took time for him to accept his new stepson as part of the family.
• Her stepson graduated from college last year.
• The stepson and his biological father maintain regular contact.