cage fightingnoun [ U ]
uk/ˈkeɪdʒ ˌfaɪ.tɪŋ//ˈkeɪdʒ ˌfaɪ.t̬ɪŋ/a form of mixed martial arts in which two people fight against each other in a cage or an area similar to a cage
cage fighter
noun [ C ] uk/ˈkeɪdʒ ˌfaɪ.tə//ˈkeɪdʒ ˌfaɪ.t̬ɚ/
Her new boyfriend used to be a cage fighter.