来自拉丁语mulus,骡子,来自PIE*mukslos,骡子,可能来自PIE*meik,混合,混杂,词源同 mix,melange.
The mule combines the strength of the horse with the endurance and surefootedness of the ass, and is extensively bred for certain employments for which it is more suited than either; it is ordinarily incapable of procreation. With no good grounds, the mule is a proverbial type of obstinacy. [OED]Properly, the offspring of a he-ass and a mare; that of a she-ass and a stallion is technically a hinny. Used allusively of hybrids and things of mixed nature. As a type of spinning machine, attested from 1797 (so called because a hybrid of distinct warp and woof machines). Meaning "obstinate, stupid, or stubborn person" is from 1470s; that of "narcotics smuggler or courier" first attested 1935.
来自《权威词典》
来自《权威词典》
来自《简明英汉词典》
来自《简明英汉词典》
来自《现代英汉综合大词典》