おやまのたいしょう

おやまのたいしょう【お山の大将】

〔遊び〕 (the) king of the castle; (the) king of the hill; 〔人〕 (the) cock of the walk.

●お山の大将をして遊ぶ play king of the castle.

●彼はただのお山の大将なのさ. He's just some guy playing king of the hill [at being a big fish in a small pond].

・お山の大将おれ一人. I am (the) monarch of all I survey.