Definitions
1.Verbpresent participle and gerund of age
2.NounThe process of becoming older or more mature.
3.NounThe deliberate process of making something (such as an antique) appear (or, in science fiction, become) older than it is.
4.NounThe accumulation of damage to macromolecules, cells, tissues and organs with the passage of time; the progressing loss of health, mobility, vibrancy and body functionality, resulting in biological death.
5.NounWear; wear and tear.
6.AdjectiveBecoming elderly."The aging artist could no longer steadily hold the brush."