fence, hedge, barrier

藩 is composed of the radical of 艸 (grass) and 潘 (surname). 艸 is the pictograph of two plants and denotes vegetation, while 潘 conveys the original idea of water flowing and swirling in circles and, by extension, spreading out around or surrounding; thus 藩 conveys the idea of surrounding a dwelling with thorny plants on all sides to ward off wild animals, means fence, hedge, or barrier.