expression, godan verb (-ku)
blow a conch; blow a trumpet shell; blow the war horn
Refers to the act of blowing a conch shell (Charonia tritonis), often used in traditional Japanese contexts such as mountain ascetics (yamabushi) or as a war horn.
山伏がほら貝を吹く音が山に響いた。
The sound of the mountain ascetic blowing the conch echoed through the mountains.
戦の合図にほら貝
They blew the war horn as a signal for battle.