What does てっぺん mean?
てっぺん is a Japanese noun meaning “top, summit, apex” in English. It can also be translated as “twelve o'clock (usu. midnight), top of one's head” depending on context. It is written as てっぺん in hiragana, and teppen in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
私たちは大阪タワーのてっぺんに上がった。
We got to the top of Osaka Tower.