From Longman Dictionary of Contemporary Englishgodchildgod‧child /ˈɡɒdtʃaɪld $ ˈɡɑːd-/ noun (plural godchildren /-tʃzldrən/) [countable] SSFFAMILYthe child that a godparent promises to help and to teach Christian values to. This promise is made at a baptism ceremony.
Examples from the Corpus
godchild• I have another godchild, Felipe's sister Ana.• Kingsley said he needed to know what his economist and his godchild had been up to. 