through window
When a character's body is passing or leaning halfway through a window frame - possibly to reach something, or to escape an area.
Do not use when the character smashes through a window, use breaking through window instead.
If the character is leaning on the window, use leaning out of window.
Not to be confused with, though they're not mutually exclusive:
- from outside, a viewpoint from outside through a window.
- looking outside, character is looking through a window.