
Nutcracker
Physical Object
Nutcracker refers to a handheld device, not a machine or a person.

Can you pass me the nutcracker from the kitchen drawer?
Specific Use
It's designed to open hard nutshells like those of walnuts or pecans.

This particular nutcracker seems sturdy enough for almonds.
Figurative Speech
Sometimes used metaphorically to describe a tough problem or challenge.

This math puzzle is a real nutcracker.
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