Meaning: If someone is long in the tooth, they are a bit too old to do something.
For Examples:
1- That actor is getting a little long in the tooth to play the romantic lead.
2- I may be long in the tooth, but I'm not stupid.
3- Don't you think she's a bit long in the tooth to be a romantic heroine?
Meaning in Arabic:
عجوز - ختيار
عجوز - ختيار