yellow-dog \ˈ ̷ ̷ ̷ ̷| ̷ ̷-\adjective Etymology:yellow dog 1.: of or relating to a yellow dog or characteristics associated with a yellow dog < pursues yellow-dog tactics to gain his ends > 2.: of or relating to opposition to trade unionism or a labor union < the Administration's yellow-dog injunction has reached the Supreme Court — J.L.Lewis >