1) a bird's second stomach, used for grinding food (gizzard)
2) an apparatus for grinding (grinder)
3) (a building (flourmill) with) machinery or apparatus for grinding grain into flour (mill)
4) (one) of the back teeth used for grinding food (molar)
the rubbing of one thing against another; (an instance of) a difference of opinion leading to argument and quarrelling
rubbing
a framework of wooden or metal bars placed across an opening such as a window, used to keep out burglars or to allow air to flow through
irritating; scraping
exhausting
difficult, taxing
needing much effort
difficult; requiring hard labor
(of sounds) rough and loud
noisy, rough
to move (something) backwards and forwards on the surface of another
stroke, massage
