蛇の目
じゃのめ bull's-eye (pattern); double ring (pattern)
Why it means this
蛇 (a snake) + の + 目 (eye) — 'snake's eye'; a bold ring-within-a-ring pattern, classically on a paper umbrella (蛇の目傘).
Breakdown
Each character links to its full entry — origin story, stroke order, and readings.