Definition of ratings:
(n) :
A number, letter, or other mark that refers to the ability of something.
(n) :
A position on a scale.
(n) :
An evaluation of status, especially of financial status.
(n) :
A quantitative measure of the audience of a television program.
(n) :
(nautical) A seaman in a warship.
(n) :
(nautical, British) An enlisted seaman not a commissioned officer or warrant officer.