1. To use a hook to fasten something to someone or something else. A noun or pronoun can be used between "hook" and "on." Can you use this to hook on the tarp?
2. To cause someone or oneself to become addicted to a particular substance. A noun or pronoun can be used between "hook" and "on." Please don't give the kids any soda—I don't want them hooked on caffeine at such a young age. I have no interest in hooking myself on drugs, thank you very much.
hooked on (someone or something)
1. slang Addicted to a particular substance or activity. Please don't give the kids any soda—I don't want them hooked on caffeine at such a young age. I've smoked pot before, but I'm not hooked on it or anything. Yeah, I used to be hooked on gambling, but those days are long behind me.
2. slang Very interested in or infatuated with someone or something; constantly desiring more of or more time with someone or something. I never thought I'd like a show like "Game of Thrones," but I'm totally hooked on it now that I've seen the first season. Oh, Dave's definitely hooked on you—his eyes light up whenever you're around. I'm totally hooked on these cupcakes from the new bakery in town.
hooked on something
1. Fig. addicted to a drug or something similar. Jenny is hooked on cocaine. She was not hooked on anything before that.
2. Fig. enthusiastic about something; supportive of something. Mary is hooked on football. She never misses a game. Jane is so happy! She's hooked on life.