Ferret (noun)

1. A small mammal of the weasel family, typically brown or white, kept as a pet or for hunting small animals such as rabbits.
2. A long, thin tool or device for reaching or searching in confined spaces.

Origin:

Middle english feret, from old french fuiret, from latin fur, fur- thief.

Examples:

1. She bought a ferret as a pet.
2. Ferrets are often used to hunt rabbits.
3. He used a ferret to pull the electrical wire through the conduit.
4. The ferret scurried through the small hole.
5. Ferrets are known to be playful and curious animals.