John Gill Commentary Joshua 21:11

"And they gave them Kiriath-arba, [which Arba was] the father of Anak (the same is Hebron), in the hill-country of Judah, with the suburbs thereof round about it." — Joshua 21:11 (ASV)

And they gave them the city of Arba, the father of Anak
Which from him was called Kirjatharba, (Joshua 14:15) ; and Anak, according to Kimchi, is not the name of a man, but a general name, comprehending the Anakims, a race of giants, among whom Arba was the chief and principal man, a prince and ruler over them, as Ben Melech:

which [city is] Hebron in the hill [country] of Judah ;
as in (Joshua 14:15) ; see (Luke 1:39Luke 1:65) ;

with the suburbs thereof round about it ;
as far as two thousand cubits, which were to put their cattle in, and provision for them.