1 an adult male of the cow family 公牛 ☞Look at the note at cow. 参看 cow 的注释。

2 the male of the elephant, WHALE and some other large animals 某些雄性动物（如象、鲸等）

3 (in business 商业) a person who buys shares in a company, hoping to sell them soon afterwards at a higher price 多头，买空者（买进公司股票后希望高价卖出的人）: a bull market(= in which prices are rising) 牛市（价格上涨的市场） ☞Compare bear. 与 bear 比较。