Definify.com
Webster 1913 Edition
crony
1.
A crone.
[Obs.]
“Marry not an old crony.” Burton.
2.
An intimate companion; a familiar friend
. [Colloq.]
He soon found his former
cronies
, though all rather the worse for the wear and tear of time. W. Irving.
Webster 1828 Edition
Crony
CRONY
,Noun.
To oblige your crony Swift, bring our dame a new years gift.
Hence, an old crony is an intimate friend of long standing.