Catnip (noun)

A perennial herb of the mint family, Nepeta cataria, whose leaves when bruised emit a strong odor that attracts and stimulates cats.

Origin:

From middle english catnep, catnepe, from old english catnæppe, from cat + neppe ("nep, a plant"); equivalent to cat +‎ -nip.

Examples:

1. The cat was attracted to the catnip plant in the garden.
2. The cat rolled on the ground, rubbing its face in the catnip.
3. Some cats will go crazy for catnip.
4. Catnip can be used as a training aid for cats.
5. Catnip can also be used as a repellent for other animals.