Chiltern Hundreds
plural noun
Chil·tern Hundreds
ˌchiltə(r)n-
: a nominal appointment granted by the British crown that serves as a legal fiction to enable a member of Parliament to relinquish his or her seat
Word History
Etymology
from Chiltern Hundreds, three hundreds in the Chiltern hills of England appointment to the stewardship of which is a disqualification for membership in Parliament