Peeping; the act of secretly looking (often into someone's private space or through a small opening).
夜中にアパートの覗きをするのは犯罪だ。
Peeping into apartments at night is a crime.
子供が戸の隙間から教室を覗き込んでいた。
A child was peering into the classroom through the crack in the door.
駅のホームで覗きをしている人を見かけた。
I saw someone peeping at the train platform.
A peep show or device with a lens/box used to view enlarged pictures or images (a small exhibition or viewing apparatus).
昔の見世物小屋には覗きが置いてあった。
Old sideshows used to have peep boxes.
博物館で江戸時代の覗きの装置を展示している。
The museum displays a peep-box device from the Edo period.
In the game of go: a move (called 'nozoki') that threatens to cut or divide the opponent's stones, placing a stone before a connecting point.
ノゾキは相手の連を分断するための有力な手筋だ。
The nozoki is an effective tactic to divide the opponent's group.