The Hebrew word ardi (אַרְדִּי) is a gentlic adjective meaning 'of Ard' or an Ardite — a descendant of Ard, the son of Bela of Benjamin. It appears in the census lists of Numbers 26, identifying a clan within the tribe of Benjamin.
The clan lists of Israel serve a profound purpose beyond genealogy — they establish that each family, no matter how small, has a named place in God's covenant community. The Ardites, though a minor clan, were counted, recorded, and given their inheritance in Israel. This speaks to the personal nature of God's covenant love: He knows every family by name. In the New Testament this expands: God knows each believer by name, and no one is anonymous in His kingdom.