Strong's #1088: geron (pronounced gher'-own)
 of uncertain affinity (compare 1094); aged:--old.
Thayer's Greek Lexicon:
 ́ 
 
  gerōn 
 
 1) an old man
 
  Part of Speech: noun masculine
Relation: of uncertain affinity, compare G1094
 
Usage:
This word is used 1 times:
John 3:4: "a man be born when he is  old? can he enter the second time"