grandchild

from WordNet (r) 3.0 (2006)
grandchild
    n 1: a child of your son or daughter
from The Collaborative International Dictionary of English v.0.48
Grandchild \Grand"child"\, n.
   A son's or daughter's child; a child in the second degree of
   descent.
   [1913 Webster]
antiflux / dictionary / grandchild
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