Crossword Genius

Grows old, as seen regularly in Tangiers (4)

Ross

I believe the answer is:

ages

Here is my best explanation:

'grows old' is the definition.
('age' can be a synonym of 'grow old')

'seen regularly in tangiers' is the wordplay.
'seen regularly in' indicates alternate letters.
The alternate letters of 'tangiers' are 'AGES'.

'as' acts as a link.

This clue was last seen in The Times