A mean or contemptible person or thing.
A staunchly loyal member of the Democratic Party who consistently supports other Democrats.
Alternative capitalization of yellow dog., chiefly used when the word has the sense "Carolina dog" or the sense "Yellow Dog Democrat".
Origin of yellow-dog
- From Southern regional yaller dog, yellow dog mongrel dog with a yellowish coat, cowardly dog Sense 2, so called because it was said that such Democrats would vote for the party's candidate even if it nominated a yaller dog
From American Heritage Dictionary of the English Language, 5th Edition