Longman Dictionary of Contemporary English - max

~1 n 1 an abbreviation of maximum 2 informal at the most  (It'll cost about ten dollars max.) 3 to the max AmE slang a) an expression meaning extremely, used to emphasize how good, bad etc something is  ("He's gorgeous, isn't he?" "To the max!") b) if you push yourself to the max, you try as hard as you can to succeed ~2 v max out phr v AmE slang 1 to do something with as much effort and determination as you can  (Hilary maxed out on the campaign.) 2 to do too much, eat too much etc + on  ("Want a beer?" "Nah, I maxed out on booze this weekend.") - maxed out adj