overturn

n 1: the act of upsetting something; "he was badly bruised by the

upset of his sled at a high speed" [syn: {upset}, {turnover}]

2: an improbable and unexpected victory; "the biggest upset

since David beat Goliath" [syn: {upset}]

v 1: turn from an upright or normal position; "The big vase

overturned" [syn: {turn over}, {tip over}]

2: cause to overturn from an upright or normal position; "The

cat knocked over the flower vase" [syn: {tip over}, {turn

over}, {upset}, {knock over}, {bowl over}]

3: rule against; "The Republicans were overruled when the House

voted on the bill" [syn: {overrule}, {override}, {overthrow},

{reverse}]

4: cause the downfall of; of rulers; "The Czar was overthrown"

[syn: {overthrow}, {bring down}]

5: annul by recalling or rescinding; "He revoked the ban on

smoking"; "lift an embargo" [syn: {revoke}, {annul}, {lift},

{countermand}, {reverse}, {repeal}, {rescind}]

6: change radically; "E-mail revolutionized communication in

academe" [syn: {revolutionize}]

overrun

1. A frequent consequence of data arriving faster than it can

be consumed, especially 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 milliseconds 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}).

[{Jargon File}]