The length of time that a person or thing has existed. She was surprised to learn that the building was over 100 years of age.
A particular period of history, especially one considered remarkable or noteworthy. The Renaissance was an age of great cultural and artistic achievement.
The latter part of life; old age. She remained remarkably active well into old age.
A generation or a stage in the life of a person or thing. At that age, toddlers are learning to walk and speak.
A very long time (usually used in the plural form ages). I haven't seen you in ages.
The point or period at which a person becomes legally eligible for something or is considered an adult. The legal drinking age in the United States is 21.