Why are dictionary definitions of key terms and phrases used in an argument often not sufficiently helpful in determining their meaning

What does sterling brown mean when he mentions the chain gang a.) brown is referring to people in general, who are chained in their minds. b.) brown is referring to slaves in chains c.) brown is referring to gangs in the ghetto chained to their crimes and poverty d.) brown is referring to men perhaps prisoners singing/chanting while working.

Identity the three types of language

Which war does jonas have a memory about? in the giver.