Definition of illegal. : not according to or authorized by law : unlawful, illicit; also : not sanctioned by official rules (as of a game)
antibiotic. n. 1. (Pharmacology) any of various chemical substances, such as penicillin, streptomycin, chloramphenicol, and tetracycline, produced by various microorganisms, esp fungi, or made synthetically and capable of destroying or inhibiting the growth of microorganisms, esp bacteria. adj.
Anti-Bacterial (Anti-Microbial) - A fabric that has been chemically treated or a fiber that is created by incorporating the anti-bacterial chemical agent into the fiber formula, making the finished fiber or fabric resistant to, or inhibiting the growth of micro-organisms.