"To donate blood" means giving a portion of your blood willingly for the purpose of helping other people who may need it in medical treatments or emergencies. Full definition
Millions of men up and down the country could be potential blood donors and many of them wish to help people in need by donating blood. (theguardian.com)
Some moms worry about getting an infection from donating blood, but nothing is inserted into you except a needle. (babycenter.com)
For additional cleansing, donate blood at your local blood bank. (banyanbotanicals.com)