definition of
luck

[1] #1 luck n. [fortune, destiny, fate, lot, circumstances, portion] your overall circumstances or condition in life (including everything that happens to you); "whatever my fortune may be"; "deserved a better fate"; "has a happy lot"; "the luck of the Irish"; "a victim of circumstances"; "success that was her portion". wn

[2] #2 luck n. [fortune, chance, hazard] an unknown and unpredictable phenomenon that causes an event to result one way rather than another; "bad luck caused his downfall"; "we ran into each other by pure chance". wn

[3] #3 luck n. [fortune] an unknown and unpredictable phenomenon that leads to a favorable outcome; "it was my good luck to be there"; "they say luck is a lady"; "it was as if fortune guided his hand". wn