szárnyverdesés znamená v Angličtina

flutter [flutters]▼noun
[UK: ˈflʌ.tə(r)] [US: ˈflʌ.tər]

flutter of wings▼noun
[UK: ˈflʌ.tə(r) əv wɪŋz] [US: ˈflʌ.tər əv ˈwɪŋz]