You know what it looks like… but what is it called?
TAKE THE QUIZ“blood is”
The following 2 entries include the term blood is.
blood is thicker than water
idiom—used to say that a person's family is more important than a person's other relationships or needs
blood is up
idiom—used to say that someone is angry and wants to fight or argue
Love words? Need even more definitions?
Merriam-Webster unabridged