cur
noun [ C ] literary uk/kɜːr/ us/kɝː/
(DOG)
（尤指吓人或凶猛的）杂种狗，恶狗
a mongrel (= dog of mixed type), especially one that is frightening or fierce
(PERSON)
孬种;懦夫
a person who is thought to be worth nothing or cowardly (= not brave)