Basically it is a sieve.It is used for straining things such as flour.
These are called windmills.
If you are refering to the stone bowls used to hold the wheat to be ground into flour it's called a mortar the items to grind the wheat is called a pestle.
The device used to flush a toilet is called a flush handle or flush button.
The device used to flush a toilet is called a "flush handle" or a "flush lever."
Twerking
I use 3 , the sieve, the colander or the straining spoon
The device is called a barometer.
The device used for measuring earthquakes is called a seismometer.
That is called the "efficiency" of the device.
its called a sonogram
Grease, oil or butter and flour is called a Rue. It is used to thicken sauces, stews, soups or to make gravy.
A common ingredient used in breading that consists of egg, flour, and breadcrumbs is called a "dredge mixture."