Meaning : A device or control that is very useful for a particular job.
Synonyms : appliance, contraption, convenience, gadget, gismo, gizmo, widget
Meaning : The faculty of contriving. Inventive skill.
Example :
His skillful contrivance of answers to every problem.
Meaning : An artificial or unnatural or obviously contrived arrangement of details or parts etc..
Example :
The plot contained too many improbable contrivances to be believable.
Meaning : Any improvised arrangement for temporary use.
Synonyms : lash-up
Meaning : The act of devising something.
Synonyms : devisal