The law of the jungle is an expression that means "every man for himself," "anything goes," "need of the sole outweights the need of the many","survival of the strongest," "survival of the fittest," "kill or be killed," "dog eat dog" and "eat or be eaten,". The Oxford English Dictionary, defines the Law of the Jungle as "the code of survival in jungle life, now usually with reference to the superiority of brute force or self-interest in the struggle for survival." It is also known as jungle law or frontier justice.