blood, sweat, and tears

Noun

blood (countable and uncountable, plural bloods)

1. A vital liquid flowing in the bodies of many types of animals that usually conveys nutrients and oxygen. In vertebrates, it is colored red by hemoglobin, is conveyed by arteries and veins, is pumped by the heart and is usually generated in bone marrow.
   • Some insects are known for consuming blood.
2. A family relationship due to birth, such as that between siblings; contrasted with relationships due to marriage or adoption. See blood relative, blood relation.
   • a friend of our own blood1690, Edmund Waller, The Maid's Tragedy Altered

   Synonyms:

   background, descent, heritage, stock

3. (uncountable) A person or people related to one by birth; one's biological relative or relatives.
   • She may not be my blood, but we grew up together, and as far as I'm concerned she's my sister.
4. (historical) One of the four humours in the human body.
5. The endometrial lining as it is shed in menstruation; menstrual fluid or period blood.
6. (countable, informal) A blood test or blood sample.
   • When I got Bilbo to their surgery the vet took Bilbo in for tests. […] His bloods showed nothing wrong at all.2016, Steve Jamieson, Bilbo the Lifeguard Dog

See all 20 meanings of blood