Narcotic, narcissus flower, and torpedo ray all share the Greek word for numbness — three very different things that make you go numb.
A drug that induces numbness, sleep, or stupor, especially an opioid; broadly, any illegal drug.
From Greek narkōtikos meaning making numb, from narkoun meaning to make numb, from narkē meaning numbness, torpor Key roots: narkē (Greek: "numbness, torpor").