lame duck

Short definition from Wiktionary

Noun

1. 1
   A person or thing that is helpless, inefficient, or disabled.
2. 2
   An elected official who has lost the recent election or is not eligible for reelection and is marking time until leaving office.
3. 3
   A person who cannot fulfill their contracts.
4. 4
   A server that continues to serve ongoing requests while refusing new ones, allowing for graceful shutdown.
5. 5
   Alternative form of lame duck.

Verb

1. 1
   To behave in the manner of a lame duck.