something that is artificial or does not seem natural, but that helps something else to happen - usually used to show disapproval:
A ridiculous series of plot contrivances moves the film along.
2 [uncountable and countable]
a plan or trick to make something happen or get something for yourself, or the practice of doing this:
Harriet's matchmaking contrivances
a machine or piece of equipment that has been made for a special purpose:
a steam-driven contrivance used in 19th century factories