3N-COUNT 栗子Chestnuts are the reddish-brown nuts that grow on chestnut trees. You can eat chestnuts. 栗子
4COLOUR 栗色;红棕色 Something that is chestnut is dark reddish-brown in colour. 栗色;红棕色
...a woman with chestnut hair.
栗色头发的女子
...a chestnut mare.
枣红色母马
5PHRASE [NOUN inflects]老掉牙的话(或故事、笑话);老一套 If you refer to a statement, a story, or a joke as an old chestnut or a hoary chestnut, you mean that it has been repeated so often that it is no longer interesting. 老掉牙的话(或故事、笑话);老一套
...that old chestnut, the war between man and machines.