(past and past participle bred)with obj.
1- cause (an animal) to produce offspring, especially in a controlled and organized way使（动物）繁殖, （使）产仔, （通过人工交配）育种：
bitches may not be bred from more than once a year.
雌狗育种交配每年不可超过一次。
1.1
- no obj.(of animals) mate and then produce offspring交配; 繁殖：
toads are said to return to the pond of their birth to breed.
据说癞蛤蟆会回到自己出生的池塘去交配繁殖。
1.2
- develop (a kind of animal or plant) for a particular purpose or quality（为某种目的而）培育（动、植物）, 育种：
these horses are bred for this sport.
这些马是专为这项运动而培育的。
1.3
- rear and train (someone) to behave in a particular way to have certain qualities培养, 养育：
Theodora had been beautifully bred.
西奥多拉被培养成了一个出色的人。
1.4
- produce or lead to (something), typically over a period of time产生; 滋生; 酿成：
success had bred a certain arrogance.
成功滋生了傲慢。
1.5
- Physics create (fissile material) by nuclear reaction【物理】（通过核反应）增殖, 再生（可裂变物质）。
1
- a stock of animals or plants within a species having a distinctive appearance and typically having been developed by deliberate selection（尤指经人工培育的动﹑植物的）同一品种; 种; 属。
1.1
- a sort or kind of person or thing（人或物的）类型, 种类：
a new breed of entrepreneurs was brought into being.
新型的企业家诞生了。
短语
breed apart
- a sort or kind of person that is very different from the norm不同寻常的人：
health-service staff are a breed apart with their dedication to duty.
保健服务行业的从业人员以其忠于职守的态度而显得与众不同。
a dying breed
- a sort or kind of person that is slowly disappearing正在消失的某一类人：
the country's dying breed of elder statesmen.
正在淡出人们视野的该国老一辈政治家。
what's bred in the bone will come out in the flesh（或 blood）
- 见BONE.
词源
Old English brēdan 'produce (offspring)， bear (a child)'， of Germanic origin; related to German brüten, also to BROOD.