the GNU version of the Collaborative International Dictionary of English
n. Stepfather or stepmother.
The Century Dictionary and Cyclopedia
n. A stepfather or stepmother.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the spouse of your parent by a subsequent marriage
Word Usage
"Children of a stepparent from a previous marriage are "les enfants du premier lit" ou "du second lit" depending on the speaker's relation to the said children."