We found 3 dictionaries that define the word window panes:

General (3 matching dictionaries)

1. window panes: Collins English Dictionary
2. window panes: Vocabulary.com
3. window-panes: Wordnik

(Note: See window_pane as well.)

Definitions from WordNet (Window pane) ▸ noun:  street name for lysergic acid diethylamide ▸ Also see window_pane ▸ Words similar to window panes ▸ Usage examples for window panes ▸ Idioms related to window panes ▸ Wikipedia articles (New!) ▸ Words that often appear near window panes ▸ Rhymes of window panes ▸ Invented words related to window panes