blood
n. uncountablen. the red liquid that flows through your body. It carries oxygen and nutrients to your organs and keeps you alive.
n. the red fluid that circulates in the vascular system of humans and other vertebrates, carrying nourishment and oxygen to and bringing waste products from all parts of the body.
The doctor needs to take a small sample of your blood.
She cleaned the cut on her knee until the blood stopped flowing and then applied a bandage.
The laboratory analysis revealed that his blood contained high levels of glucose, suggesting a need for immediate dietary adjustments and further medical consultation.
Typically uncountable when referring to the fluid in general; can be countable in medical contexts when referring to specific types or samples.
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blood and guts
Gore; gruesome images.
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blood in the water
In a competitive situation, the exhibition of apparent weakness or vulnerability by one party, especially when this leads to a feeling of vulnerability or greater pressure to perform on the part of the weak party, or enhanced expectation of victory by the others.
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blood is thicker than water
Family relations and loyalties are stronger than relationships with people who are not family members.