mongrel

mongrel
/ˈmʌŋgrəl; `mʌŋɡrəl/ n
1 dog of mixed breed 杂种狗.
2 any plant or animal of mixed origin 杂交的动植物
    [attrib 作定语]
a mongrel breed 杂种
    of mongrel stock 混种的.

牛津英汉双解词典