a ‧ gape /əˈɡeɪp/ BrE AmE adjective [not before noun]
with your mouth wide open, especially because you are surprised or shocked:
Vince watched, his mouth agape in horror.
a ‧ gape /əˈɡeɪp/ BrE AmE adjective [not before noun]
with your mouth wide open, especially because you are surprised or shocked:
Vince watched, his mouth agape in horror.
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012