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carapace; shell
1st in rank; grade A
instep; back of hand
the A party (e.g. in a contract); the first party; plaintiff (label in legal documents)
「甲」 has other readings with different meanings.
カメの甲は外敵から身を守る役割を果たす。
A turtle's shell serves to protect it from predators.
カニの甲を割って中の身を取り出した。
They cracked the crab's shell and removed the meat inside.
水族館で亀の甲羅の模様をじっくり観察します。
I observed the turtle's shell.