noun Date: 1867 a venture involving great risk but promising a great reward if successful, an entry (as in a horse race) given little chance of winning, a bet in which the chances of winning are slight but the possible winnings great
LONG SHOT
Meaning of LONG SHOT in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012