painkiller

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painkiller

(pān′kĭl′ər)
n.
An agent, such as an analgesic drug, that relieves pain.

pain′kill′ing adj.

painkiller

, pain killer (pān′kil″ĕr)
A colloquial term for a medication or a procedure that decreases a patient's discomfort caused by pain or alleviates hurtful or unpleasant sensations.