Definition from Wiktionary, the free dictionary
- (idiomatic) final, as a last resort; done in desperation.
- He sent flowers in a last-ditch effort to keep her from leaving.
2011 January 15, Sam Sheringham, “Chelsea 4 - 3 Blackburn Rovers”, BBC:
- Only a last-ditch tackle from Michel Salgado denied Didier Drogba after a clever through-ball from Anelka and, from the resulting corner, Ivanovic flicked the ball on for Ramires, who lashed a half-volley against the bar.
Often in the phrase last-ditch attempt or last-ditch effort