klaxon

1. (intransitive) To produce a loud, siren-like wail.Examples: "He headed down the Embankment. It was noon precisely. Big Ben klaxoned the hour with blasts of servo whistle."; "Suffering. It was like a great discordant symphony ringing out from the world; like a klaxoning of a million million cracked bells."; "Century stops before an eel-ship, coiled in jewel-skinned splendor. Its great eye-ports are open, and Century signals with a hand; the eel extends a proboscis lined with diamond mesh and graphene plates like a ramp. Century leads Mere into the eel's body. Alarms klaxon in Mere's head—its escape is known."intransitive