A pointed tool, rather like an awl, used for breaking ice.(noun)
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Use "icepick" in a sentence
"Fun and warmth and sun only lead to my skull-splitting icepick."
"I didn't want to jam that icepick through your eye, but you left me no other choice."
"Soon there will come a mounting sense of dread when the reality dawns that if the chosen leader should for some reason – cold feet, an icepick in the skull, tempting odds on a rival – fail to heed the nation's call, then the next best available candidate is Neil Warnock."