طحن, سحق
reduce (something) to small particles or powder by crushing it
احتكاك, طحن
rub (something) together or against something else with a harsh, grating sound
يكدح, يجتهد
perform a repetitive or tedious task
روتين, كدح
a repetitive or tedious task or period of work
طحن, احتكاك
the action or sound of grinding