Meaning of the word Jumm’ah

The renowned Mufassir, Hakīm Ul-Ummah Muftī Ahmad Yâr Naeemī raĥimahullah states in Mirâ’at Sharh al-Mishkāt,

This day (Friday) is called Jumm’ah because this is the day that the whole of creation was gathered (mujtama’) together, and the clay of Sayyidunā Adam Safiyyullâh álayhis salâm was collected (jam’), and because people gather (jam’) and perform the Friday Salâh on this day. Before the advent of Islam, the Arabs called this day Arūbah.