Princeton's WordNet

1. fortune, destiny, fate, luck, lot, circumstances, portion(noun)

   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"

2. luck, fortune, chance, hazard(noun)

   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"

3. luck, fortune(noun)

   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"

Kernerman English Learner's Dictionary

1. luck(noun)ˈʌk

   a situation in which good things happen by chance

   We haven't had much luck this year.; I want to wish you all luck in your travels.

2. luckˈʌk

   to bring luck

   He was wearing his favorite t-shirt for luck.

3. luckˈʌk

   indicates the thing sb wants will happen

   You're in luck - she's available right now.

4. luckˈʌk

   indicates the thing sb wants will not happen

   You're out of luck - we just sold the last one.

5. luckˈʌk

   ≠ fortune

   an action that brings good/bad luck

6. luckˈʌk

   indicates sth good happened because of luck

   As luck would have it, someone had picked up my wallet.

7. luckˈʌk

   whether good or bad things happen

   I think your luck is changing.

8. luckˈʌk

   indicates you are disappointed but not surprised by some bad luck

   Just my luck - I arrive just as everybody's leaving.

9. luckˈʌk

   used to ask if sb has found what they want

   Any luck finding a dress?

10. luckˈʌk

    indicates you hope good things happen to sb

    Good luck on/with your exams!

11. luckˈʌk

    used to encourage sb when they have not done well

    Nice try! Better luck next time.

12. luckˈʌk

    indicates disappointment that sth you want did not happen

    I tried to find the same coat as you, but no such luck.

Wiktionary

1. luck(Noun)

   Something that happens to someone by chance, a chance occurrence.

2. luck(Noun)

   A superstitious feeling that brings fortune or success.

3. luck(Noun)

   success

4. luck(Verb)

   To succeed by chance

   His plan lucked out.

5. luck(Verb)

   To rely on luck.

   No plan. We're just to going to have to luck through.

6. luck(Verb)

   To carry out relying on luck.

   Our plan is to luck it through.

Origin: From luk, lukke, related to luk, gelok, geluk, luk, Glück, lykke, lycka, lukka.

Webster Dictionary

1. Luck(noun)

   that which happens to a person; an event, good or ill, affecting one's interests or happiness, and which is deemed casual; a course or series of such events regarded as occurring by chance; chance; hap; fate; fortune; often, one's habitual or characteristic fortune; as, good, bad, ill, or hard luck. Luck is often used for good luck; as, luck is better than skill

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