lawyer who specializes in disclosure of identification information of the sender in the Internet

(politics, historical) the minister of the right, a government position in the 太政官 (Daijō-kan, “Great Council of State”, the highest government office under the 律令 (Ritsuryō) system)

vocalization (act of vocalizing or something vocalized) / leading others in a cheer or song

Kyūjitai form of 双角錐: dipyramid, bipyramid