granny granny /ˈgræni/

noun

1. () [British] The mother of your father or mother  ( gran , grannie [British] , nan [Informal, British] , grandma , grandmother , granny [British] , nanna [Informal, British] , grandmama [Archaic] , grandmamma [Archaic] )
   the mother of your father or mother
    My grandmother is an excellent cook
   My grandmother is an excellent cook
   
   
2. A reef knot crossed the wrong way and therefore insecure  ( granny , granny knot )
   a reef knot crossed the wrong way and therefore insecure
   
   
3. An old woman  ( granny )
   an old woman