last resort

last resort idiom
A final expedient or recourse to achieve some end or settle a difficulty. For example, If you don't improve, we'll try this new medication as a last resort. This term originally referred to a court of law from which there was no appeal. [Late 1600s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Comments
Improve this definition.
Do you have more to add? Share your linguistic knowledge or observation.
/Register to save your comments.