casement
US /ˈkeɪ.smənt/
UK /ˈkeɪ.smənt/

1.
janela de batente, caixilho
a window or part of a window that opens on hinges along its side
:
•
She pushed open the wooden casement to let in the fresh air.
Ela abriu a janela de batente de madeira para deixar o ar fresco entrar.
•
The old house had many small casement windows.
A casa antiga tinha muitas pequenas janelas de batente.