servant / slave (of God)
Masculine noun. Plural: عِبَادٌ (ʿibād) or عَبِيدٌ (ʿabīd). Related: عِبَادَةٌ (worship), عَابِدٌ (worshipper). Common in names: عَبْدُ اللَّهِ (Abdullah).
Being called 'abd Allāh' (servant of God) is the highest honor in Islam. The Prophet Muhammad ﷺ is referred to here as God's servant during the Night Journey (al-Isrāʾ).