1
general::
Phrase(s): *over the hill
1. Fig. Inf. escaped from prison or the military. (*Typically: be ~; go ~.) • Two privates went over the hill last night. • They broke out of jail and went over the hill. 2. Fig. too old (for something). (*Typically: be ~; go ~.) • You’re only fifty! You’re not over-thehill yet. • Some people seem over-the-hill at thirty.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Past one's prime, as in I'm a little over the hill to be playing contact sports. This term, alluding to a climber who has reached a mountaintop and is now descending, has been used figuratively for the decline caused by aging since the mid-1900s.
American Heritage Idioms