محو1 مَحَاهُ He effaced, erased, rased, obliterated, or cancelled, it; removed, or did away with, its impression or trace. (K.) b2:  مَحَتِ الرِّيحُ عَنْهُ الأَسْقَامَ وَالدُّنُوبَ The wind made to pass away, or dispelled, the clouds. (TA.) b3:  مَحَا الصُّبْحُ اللَّيْلَ Daybreak dispelled the night. (TA.) b4:  مَحَااللّٰهُ عَنْهُ الأَسْقَامَ وَالدُّنُوبَ [God removed from him diseases and sins; as though He cancelled them]. (Msb in art. عفو.) b5:  الإِحْسَانُ يَمْحُو الإِسَآءَةَ Beneficence effaces, obliterates, or cancels, evil conduct. (TA)