We found 3 dictionaries that define the word of a certain age:

General (2 matching dictionaries)

1. of a certain age: Merriam-Webster
2. of a certain age: Wiktionary

Miscellaneous (1 matching dictionary)

3. of a certain age: Idioms

Phrases: Men of a Certain Age, more... ▸ Words similar to of a certain age ▸ Usage examples for of a certain age ▸ Idioms related to of a certain age ▸ Wikipedia articles (New!) ▸ Words that often appear near of a certain age ▸ Rhymes of of a certain age ▸ Invented words related to of a certain age