Answer: antibiotic

AnswerCrossword Clue
ANTIBIOTICStreptomycin, for example
ANTIBIOTICBug killer
ANTIBIOTICBug fighter
ANTIBIOTICGerm-killer.
ANTIBIOTICProtection from bugs
ANTIBIOTICTreatment for bacterial infections
antibioticinhibiting to life / a substance derived from a microorganism and able in dilute solution to inhibit or kill another microorganism
antibioticA medicine (such as penicillin or its derivatives) that inhibits the growth of or destroys microorganisms