词典释义：
(亦作
栗子。
[mass noun]a deep reddish-brown colour
深红棕色，栗色。
a horse of a reddish-brown or yellowish-brown colour, with a brown mane and tail
栗色马。
a small horny patch on the inside of each of a horse's legs
（马腿内侧的）胼胝。
(亦作
欧洲板栗树。
short for
HORSE CHESTNUT</Bold>的简称。
used in names of trees and plants that are related to the sweet chestnut, or produce similar nuts or edible parts that resemble them, e.g.
［用 于树名或植物名，这些树或植物与欧洲板栗有亲缘关系，或产类似坚果，或其可食部分与栗子相似，如water chestnut］ 。
-
an old chestnut a joke, story, or subject that has become tedious and uninteresting because of its age and constant repetition 陈腐的笑话；老掉牙的故事；陈旧乏味的题材 -
pull someone's chestnuts out of the fire succeed in a hazardous undertaking for someone else's benefit 为某人火中取栗，为他人冒风险 -
［ORIGIN with reference to the fable of a monkey using a cat's paw to extract roasting chestnuts from a fire．］
"early 16th cent.: from Old English
