Quote from Mr J:
I find it amusing that you jump on someone by suggesting that they don't know the definition, when you yourself do not know it. By definition, gambling is when one places a stake on an event with an uncertain outcome. That is it.
With all due respect sir, that simply is just not true. You were close though, but if you look in the dictionary you'll clearly see that the definition of gambling is when one places a stake on an event where the outcome is determined by
"chance" ... not just that the outcome is unknown in advance.
http://dictionary.reference.com/browse/gambling
gam⋅ble
   ˈgæmbəl / [gam-buhl]
verb, -bled, -bling, noun
âverb (used without object)
1. to play at any
game of chance for money or other stakes.
2. to stake or risk money, or anything of value, on the outcome of something involving
chance: to gamble on a toss of the dice.
http://dictionary.reference.com/browse/chance
chance
   /tʃæns, tʃɑns/ [chans, chahns]
noun, verb, chanced, chanc⋅ing, adjective
ânoun
1. the absence of
any cause of events that can be predicted, understood, or controlled
2. luck or fortune: a game of chance.
Again, the outcome of ANY business transaction, with the exception of buying treasuries or sticking your money in a bank, is always unknown in advance. I doubt the average person would consider Donald Trump, or any businessman for that matter, a professional gambler simply because they are unable to predict with 100% certainty the exact outcome of their business transactions in advance.