carry-in

noun[before a noun]3

1. •
   A location or program to which participants bring something, such as appliances brought to a repair shop or food brought to a gathering.
2. •
   A potluck (shared meal of foods contributed by guests).
3. •
   A command that adds a carry (bit or digit that is carried in an addition operation) to an accumulator for the current digit in an addition operation.