1. approximate age; apparent age
たぶん同じくらいの年頃だ。They are probably about the same age.
2. marriageable age (esp. of a woman); age of maturity; age of adulthood
あたしだって、年頃の女の子だもん。I'm a young woman too, you know.
3. age (when ...)
after a modifying phrase
Adverb
Adjective (の)
Old-fashioned
4. for years (past); for a long time