n.
1.reflex shaking caused by cold or fear or excitement
2.an almost pleasurable sensation of fright shiver v.
1.tremble convulsively, as from fear or excitement
2.shake, as from cold
Idiom of the Day
keep (something) down or keep down (something)
to keep food in one's stomach (without vomiting it up when sick)
The child was sick and found it difficult to keep his food down.