I. ALF /ˌeɪ el ˈef/ abbreviation for
↑ Animal Liberation Front
II. ˌAnimal Libeˈration ˌFront BrE AmE abbreviation , ALF
a British organization that protests against using animals in scientific ↑ experiment s , such as testing drugs or ↑ cosmetics . Some members of the Animal Liberation Front have actively helped to set these animals free, and others have used bombs and other violent methods to protest.