'Granny' definitions:

Definition of 'granny'

(from WordNet)
noun
The mother of your father or mother [syn: grandma, grandmother, granny, grannie, gran, nan, nanna]
noun
An old woman
noun
A reef knot crossed the wrong way and therefore insecure [syn: granny knot, granny]

Definition of 'Granny'

From: GCIDE
  • Granny \Gran"ny\, n. A grandmother; a grandam; familiarly, an old woman. [1913 Webster]
  • Granny's bend, or Granny's knot (Naut.), a kind of insecure knot or hitch; a reef knot crossed the wrong way. [1913 Webster]

Synonyms of 'granny'

From: Moby Thesaurus