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: traffic meaningearlier meaningtoken in a sentencemay meaningreconnect meaningofficial definitionnecessary meaningdefinition of streetline meaningdefinition of axissolution in a sentencedefinition of hope 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