Definition of "illegitimate child" []

• The illegitimate offspring of unmarried parents (noun)

WordNet. Princeton University. 2010.

• "This moving lyric commemorates the death of Maud Gonne’s illegitimate child Georges, who died of illness probably meningitis on August 31, 1891."
• "More sensationally, “On a Child’s Death” commemorates the death by meningitis of one-year-old Georges, the illegitimate child whom Gonne had with the French political journalist Lucien Millevoye."
• "Jeanne-Baptiste de Bourbon, an illegitimate child of Henry IV by the beautiful Charlotte des Essarts, has the credit of finally giving peace to the order."