Wiktionary:
Encarta:Noun
Singular: jitter
Plural: jitters
1. A nervous action; a tic.
2. A state of nervousness (primarily used in the plural - often with 'the'.)
That creepy movie gave me the jitters.
3. (telecommunications) An abrupt and unwanted variation of one or more signal characteristics.
Related terms
jitterbug
have the jitters
jit·ter [ jíttər ]
intransitive verb (past and past participle jit·tered, present participle jit·ter·ing, 3rd person present singular jit·ters)
Definition:
behave nervously: to behave in a nervous or restless way ( informal )
noun (plural jit·ters)
Definition:
1. rapid signal fluctuation: an undesired rapid movement of electrical signals or images, e.g. on a television or oscilloscope screen, because of circuit instability or faulty components
2. distortion in digitized information: a distortion in digitally transmitted or recorded sound or images, caused when two devices such as the recording and playback devices of audio recordings are not perfectly synchronized
plural noun jit·ters
Definition:
nervous attack: feelings of nervousness or agitation ( informal )
He's got the jitters about his interview tomorrow.
[Early 20th century. Origin ?]
Jitterbug was a GWOTD on 03/25/2007.