noun.
An amusingly eccentric or grumpy and usually elderly man.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
used affectionately to refer to an eccentric but amusing old man
Word Usage
"The so-called codger representing besieged law and order is Sheriff Ed Tom Bell, played by Tommy Lee Jones with the kind of wit and assurance that reveals a master actor at the top of his game."