1The act of donating blood (usually at a blood donation center) for use in transfusions or medical needs.
週末に近くの病院で献血をしてきた。
I donated blood at a nearby hospital over the weekend.
献血は社会のためになるボランティア活動だ。
Blood donation is a volunteer activity that benefits society.
献血の前には十分な睡眠と水分補給が大切だ。
Before donating blood it's important to have enough sleep and stay hydrated.