flu What is the Definition of flu?Noun:an acute febrile highly contagious viral disease Other meanings of flu (synonyms, cognates). ENRU flu грипп fluffy пушистый fluidity текучесть Frequently viewed: definition of riskdefinition of proceeddefinition of purposeknown meaningforth meaningcat meaningvision meaningfavor definitionjob definitionsaying meaningpayment definitionunder meaning A B C D E F G H I J K L M N O P Q R S T U V W X Y Z