the end of the line
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the end of the line
1. The physical end of a route of travel, usually a bus or train route. This is the end of the line, folks, so everyone needs to get off the bus.
2. By extension, the conclusion or final step of something. Printing our report is the end of the line—now, we just have to hand it in and pray for a good grade! Regardless of how this championship series goes, I know this is the end of the line for me, after 16 years in the league.
end of the line
Also, end of the road. The conclusion or final outcome. For example, The editorial pointed out that it was the end of the line for the President; he'd never be reelected , or It was obviously the end of the road for this television series. This idiom alludes to the point where a road or line stops. [c. 1900]