Hustle can also mean to make money illegally, and most likely by fooling other people. You can see a lot of that in the movie "American Hustle". It can also refer to prostitution. Example: He is too lazy to work so he just hustles in the streets. - I this sentence, "he just hustles" can mean that he is selling drugs, or he is fooling people by selling them fake items, or selling stolen goods, or he is involved in the prostitution trade, or any other illegal activities.

to move quickly with energy and purpose; the word has a positive connotation generally He hustles everytime I ask him to get something for me.

Hustle means a state of great activity and it's usually used with the word "bustle" for example: The hustle and bustle of this city is impressive. it can also be used as a verb to say that you're forcing someone to move hotfoot.