Other forms: last resorts
The last resort is something you choose only after you've eliminated every other possibility. If every hotel and reception hall is booked, a couple may end up getting married in their own backyard as a last resort.
This phrase, which has been used in English since the 17th century, comes from a French legal term, en dernier ressort. This was a type of court or legal case that didn't allow appeals, but instead cast final, permanent decisions. Today we use last resort for things that are our last choice; you should try to reason with your neighbor about his barking dog, only calling the police as a last resort.