overrun

overrun n.  1. [techspeak] Term for a frequent consequence
   of data arriving faster than it can be consumed, esp. in serial
   line communications.  For example, at 9600 baud there is almost
   exactly one character per millisecond, so if a {silo} can hold
   only two characters and the machine takes longer than 2 msec to get
   to service the interrupt, at least one character will be lost.
   2. Also applied to non-serial-I/O communications.  "I forgot to
   pay my electric bill due to mail overrun."  "Sorry, I got four
   phone calls in 3 minutes last night and lost your message to
   overrun."  When {thrash}ing at tasks, the next person to make a
   request might be told "Overrun!"  Compare {firehose syndrome}.
   3. More loosely, may refer to a {buffer overflow} not
   necessarily related to processing time (as in {overrun screw}).