noun a written notice in several languages, carried by members of the American armed forces, identifying the person as American and promising a reward for help in evading the enemy. The US Department of Defense Policy on Blood Chits states that the chits 'are a tool used by an evader or escapee after all other measures of independent evasion and escape have failed and the evader(s) considers assistance vital to survival. Upon receiving assistance, the evader or escapee provides the assistor with the blood chit number. The blood chit represents an obligation of the U.S. Government to compensate the claimant, or his immediate family if the claimant is deceased, for services rendered to DoD personnel.' The version used in the Vietnam war had the plea for 'assistance in obtaining food, shelter and protection' in English, Burmese, Chinese, Thai, Laotian, Cambodian, Vietnamese, Malayan, Indonesian, Tagalog, Visayan, French and Dutch US, 1941