any of various drugs that block alpha-adrenergic receptors; used in treating benign prostatic hyperplasia; relaxes the muscles of the prostate and bladder

a classification system for the antigens of human blood; used in blood transfusion therapy; four groups are A and B and AB and O

a powerful stroke with the fist or a weapon

a powerful stroke with the fist or a weapon

a powerful stroke with the fist or a weapon

a powerful stroke with the fist or a weapon

a powerful stroke with the fist or a weapon

a powerful stroke with the fist or a weapon

a powerful stroke with the fist or a weapon

delicate California annual having blue flowers marked with dark spots