hammer and anvil

5.8

Two tools that shape metal or two forces that shape each other

noun
/ˈhæmər ənd ˈæn.vɪl/

: martillo y yunque

The process became a hammer and anvil situation, with both sides influencing the outcome.

Examples

Their discussions acted as a hammer and anvil, refining each other's ideas.
The blacksmith used a hammer and anvil to shape the metal.
The blacksmith skillfully used the hammer and anvil to shape the horseshoe.
She always keeps her hammer and anvil in the workshop.
In blacksmithing, the hammer and anvil are essential tools for shaping metal into various forms.
The relationship between the coach and player is like a hammer and anvil, where the coach shapes the player's skills.
He viewed the negotiations as a hammer and anvil, where each side influenced the other's terms through repeated discussions.

Surface Forms

hammer and anvil singular

hammers and anvils plural

Morphology

hammer + and + anvil

The phrase directly names two concrete tools joined by 'and', so a B1 learner who knows 'hammer', 'and', and 'anvil' will readily infer it refers to the pair used in metalworking. The metaphorical sense (one force shaping or repeatedly acting on another) is a straightforward, image-based extension of the literal tools, so the meaning is compositionally predictable.

Etymology

Hammer and anvil comes from a blacksmith's workshop: the hammer strikes hot metal on the anvil again and again to change its shape. So people use this image for a situation where two forces work together to 'shape' or 'trap' something and decide the outcome.