Lingo
[iron] in the fire
a project, activity, plan, business, etc. that an individual is involved in
The phrase "iron in the fire" originated in the 16th century and referred to the practice of blacksmiths heating multiple pieces of iron in a forge at the same time. The term "iron" is used metaphorically to represent a project or plan, and the "fire" symbolizes the energy and effort devoted to it. It is used to describe a situation where someone is working on multiple projects or plans simultaneously.
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