1.b> (); to grate cheese ;
2.b> 1) , ; / i> / ; to grate one hard substance against / on, upon / another / i> ;
2) (), ; / i> ; wheels grate on an axle ; a key grated in the lock ;
3.b> (); this outrageous merriment grated my spirits ; it grates on / upon / my ear i> .