chestnuts

noun

1. 1

   A tree or shrub of the genus Castanea.

2. 2

   The nut of this tree or shrub.

3. 3

   A dark, reddish-brown colour, as seen on the fruit of the chestnut tree.

4. 4

   A reddish-brown horse.

5. 5

   The wood of a chestnut tree.

6. 6

   An old joke; a worn-out meme, phrase, ploy, etc. so often repeated as to have grown tiresome or ineffective (often in the phrase "old chestnut").

7. 7

   A round or oval horny plate found on the inner side of the leg of a horse or other animal, similar to a birthmark on a human.

8. 8

   The horse-chestnut.