1
tortoise shell
See also:
亀甲 (きっこう)
亀の甲より年の功。
Experience without learning is better than learning without experience.
2
hexagon pattern;hexagon shape
3
benzene ring;benzene-ring structure
See also:
六角形 (ろっかっけい)
4
tortoise shell (shape)
1
Kamenokou
Other forms
龜の甲 【かめのこう】 (search-only kanji form)