1
: the red liquid that flows through the bodies of people and animals
The accident victim has already lost a lot of blood.
the blood in your veins
She donates/gives blood twice a year. [=twice a year she has blood taken out of her body so that it can be put into the body of a person who needs it]
2
—used to say that a person's ancestors were of a particular kind
There's some Italian blood in her family. [=one or more of her family's ancestors was Italian]
a man of royal blood [=a man with kings and queens in his family]
3
: members of a team, company, or organization
—usually used in the phrases new blood or young blood
Our company could benefit from some new blood. [=new employees]
We've just added some young blood to the team.
Cite this Entry
“Blood.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/blood. Accessed 17 Apr. 2026.
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