(shiv′ər) v.i.
To tremble, as with cold or fear; shake; vibrate; quiver.
—v.t. Naut. To cause to flutter in the wind, as a sail. See synonyms under QUAKE.
—noun The act of shivering; a shaking or quivering from any cause. [? Blend of SHAKE and QUIVER]

(shiv′ər) v.t. & v.i.
To break suddenly into fragments; shatter. See synonyms under BREAK, SHAKE.
—noun A splinter; sliver. [ME schivere; origin uncertain]