1.
because you believe it will bring you good luck, or because this is a traditional belief :
Take something blue. It's for luck.
2.
for no particular reason :
I hit him once more for luck.
1.
because you believe it will bring you good luck, or because this is a traditional belief :
Take something blue. It's for luck.
2.
for no particular reason :
I hit him once more for luck.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005