脑血栓 nǎoxuèshuān cerebral thrombosis, cerebral embolism Definitions Defs Origin Strokes Stroke Words Sentences Sents 脑 腦 nǎo noun brain The brain of a person or animal; the organ in the head that controls thought and movement.血栓 xuèshuān thrombus A solid mass of blood components formed inside a blood vessel or the heart; a blood clot