also: てつあれい
noun
iron dumbbell; dumbbells
Refers to a single iron dumbbell or a pair. Often used in the context of strength training or exercise.
毎朝、鉄アレイで筋トレをしている。
I do strength training with iron dumbbells every morning.
彼は片手で鉄アレイを持ち上げた。
He lifted an iron dumbbell with one hand.