Shake with cold (6)
I believe the answer is:
shiver
'shake with cold' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for shiver that I've seen before include "Shake with cold or fear" , "Tremble slightly as from cold" , "Shudder" , "Tremble, shatter" , "Momentary tremble" .)