Verb
(transitive) to include (someone) in an activity, etc.
You're going to the beach? Count me in!
Antonym: count out
(transitive) to do a countdown before the start of something, especially a musical performance.
The drummer will count us in with a "three-two-one".
Cowards do not count in battle; they are there, but not in it. Euripides
Close don't count in baseball. Close only counts in horseshoes and grenades. Frank Robinson
Life and death, union and separation, follow hard upon one another. Nothing is steadfast but the will, nothing endures but one's achievements. These alone count in life. Yoshida Shoin
I've never sought success in order to get fame and money it's the talent and the passion that count in success. Ingrid Bergman
The first, and overarching, count in the new indictment is that slavery permitted one group of people to exercise unrestrained personal domination over another group of people. Robert Fogel
Modeling was so fleeting it doesn't count in my life scheme. Ali MacGraw