Goodly castles - Rather, both here and in Genesis 25:16, hamlets. The word is derived from a word טוּר ṭûr,) signifying “a row” or “range” (compareEzekiel 46:23 Ezekiel 46:23); and probably indicates those collections of rude dwellings, made of stones piled one on another and covered with tent-cloths, which are used by the Arabs to this day; and which are frequently mentioned as douars in narratives of the French campaigns in Algeria. These dwellings would be formed usually in a circle. See the word “Hazeroth,” in Numbers 11:35.
Related Commentaries of Numbers 31:10
Numbers 31:10
10 And they burnt all their cities wherein they dwelt, and all their goodly castles, with fire.