someone who fights ferociously, especially a gangster; someone who is willing to risk it all despite being in a disadvantaged position
Definitions (粵典–words.hk)
名詞、俚語
形容一個人好勇鬥狠，仲要永不言棄；以前啲人鍾意鬥蟋蟀，要睇得出隻蟋蟀好鬥與否，就要睇下佢個頭有冇俾其他蟋蟀咬爛 someone who is hard to defeat, difficult to kill, very tough