Horseradish (noun)

A plant, Armoracia rusticana, of the mustard family, whose pungent root is used as a condiment or a stimulant.

Origin:

From horse + radish.

Examples:

1. The roast beef was served with a side of creamy horseradish sauce.
2. A little bit of grated horseradish adds a spicy kick to sandwiches.
3. Horseradish is a traditional accompaniment to roast beef and other meats.
4. Horseradish is also used in many traditional dishes around the world.
5. Horseradish is a perennial plant that is easy to grow in the home garden.