/ ˈrʌndaʊn; NAmE / noun [ usually sing. ]
1.
rundown (in / of sth) ( BrE ) a reduction in the amount, size or activity of sth, especially a business :
a rundown of transport services
2.
rundown (on / of sth) an explanation or a description of sth :
I can give you a brief rundown on each of the applicants.