- informal any therapeutic agent, esp one in the early stages of development, reputed to be very effective in treating a condition, such as a malignant tumour, by specifically targeting the diseased tissue
WordReference Random House Unabridged Dictionary of American English © 2020
something that cures or remedies without causing harmful side effects:So far there is no magic bullet for economic woes.
Collins Concise English Dictionary © HarperCollins Publishers::
magic bullet n