expression, ichidan verb
throw down the gauntlet; issue a challenge
Idiomatic expression derived from the Western custom of throwing a glove to challenge someone. Used figuratively for issuing a challenge or provocation.
彼はライバルに手袋を投げた。
He threw down the gauntlet to his rival.
その発言は、業界全体への手袋を
That statement was like throwing down the gauntlet to the entire industry.