Search Result for "grandmother": 
Wordnet 3.0

NOUN (1)

1. the mother of your father or mother;
[syn: grandma, grandmother, granny, grannie, gran, nan, nanna]



The Collaborative International Dictionary of English v.0.48:

Grandmother \Grand"moth"er\, n.
   The mother of one's father or mother.
   [1913 Webster]


WordNet (r) 3.0 (2006):

grandmother
    n 1: the mother of your father or mother [syn: grandma,
         grandmother, granny, grannie, gran, nan, nanna]