black cow

black-cow的词性：
n.Chicago （名词）【芝加哥】

1. A float made with root beer and vanilla ice cream.See Regional Note at milk shake
黑牛奶汽水：由无酒精饮料和香草冰淇淋做成的饮料参见 milk shake

black-cow的词源：

2. black
black

3. cow ¹ [from the ice cream used in making it]
cow¹ [来自用于制该饮料的冰淇淋]