Main Entry: ¹jit·ter

Pronunciation: \ˈji-tər\

Function: noun

Etymology: origin unknown

Date: 1929

1 plural : a sense of panic or extreme nervousness <had a bad case of the jitters before his performance>
2 : the state of mind or the movement of one that jitters
3 : irregular random movement (as of a pointer or an image on a television screen); also : vibratory motion