(Internet slang) opening 2 different windows (chatroom, etc.) at the same time

French window

(offensive, Internet slang) Alternative form of 子供部屋おじさん

(offensive, Internet slang) a man whose age is greater than about thirty or forty who lives in one's child room and with one's parent(s).

single room

double room

the eyes are the window to the soul

double-pane window, found especially in Hokkaido and Tōhoku as cold-proofing

(formal) [I, we] wish you a happy new year (literally meet a good year)

excuse me; may I come in?