black iron

名词 n.
中文释义

英文释义

名词 n.
  1. Free weights as opposed to exercise machines. uncountable
    — The problem we had was not the concept or the product, but what to do with the space. To put a beauty salon alongside a black iron gym was ludicrous.

词源

From the typical paint color and material traditionally used for free weights (cast iron with black paint).
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