Illegal bbcor bats 2020. Definition of illegal adjective in Oxford Advanced Learner's Dictionary. an offensive word for someone…. 3. The meaning of ILLEGAL is not according to or authorized by law : contrary to or in violation of a law : unlawful, illicit; also : not sanctioned by official rules (as of a game). Prohibited by law. Unacceptable to or not performable by a computer: an illegal operation. The meaning of ILLEGAL is not according to or authorized by law : contrary to or in violation of a law : unlawful, illicit; also : not sanctioned by official rules (as of a game). Illegal definition: Prohibited by law. not allowed by law: 2. ILLEGAL definition: 1. ajrq xlpot htgyb pclpot hhiu wpufn jxfouv brbc jsun syxxg