THE NOUN OF INSTRUMENT  اسْمُ الآلَة

  اسْمُ الآلَةِ The Noun of instrument describes the instrument with which the action is carried out. It resembles the noun of time and place, beginning with the mim مِ , but this letter is vowelled with kasra instead of fatha. It takes the form of:  مِفْعَال مِفْعَلَة and مِفْعَل...