はためく
hatameku

Godan Verb (ku)

1. to flutter (e.g. a flag); to wave

Intransitive
ふうにはためいた。
hoga kazeni hatameita.
The sails fluttered in the wind.
Godan Verb (ku)

2. to reverberate (e.g. thunder); to resound

Intransitive
Formal Register