blood injury
/ˈblʌd ˌɪn(d)ʒ(ə)ri/noun
1Injury or damage to blood cells, or to bone marrow cells producing these; an instance of this.
2An injury resulting in bleeding; (Rugby Football ) such an injury which (under the rules) necessitates the player leaving the field for treatment.
Origin
Late 19th century (in an earlier sense). From blood + injury.