#1 shiver v. [shudder, throb, thrill] tremble convulsively, as from fear or excitement. wn
#2 shiver v. [shudder] shake, as from cold; "The children are shivering--turn on the heat!". wn
#3 shiver n. [tremble, shake] a reflex motion caused by cold or fear or excitement. wn
#4 shiver n. [frisson, chill, quiver, shudder, thrill, tingle] an almost pleasurable sensation of fright; "a frisson of surprise shot through him". wn
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