Definition of count (someone) in
- "Do you want to go to the beach with us?" "Yes! Count me in!"
: to indicate or name by units or groups so as to find the total number of units involved : number
: to name the numbers in order up to and including
: to include in a tallying and reckoning
: the action or process of counting
: a total obtained by counting : tally
: reckoning, account
: a European nobleman whose rank corresponds to that of a British earl
: some person : somebody
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