Transfuse \Trans*fuse"\, v. t. [imp. & p. p. {Transfused}; p. pr. & vb. n. {Transfusing}.] [L. transfusus, p. p. of transfundere: cf. F. transfuser. See {Transfund}.] 1. To pour, as liquid, out of one vessel into another; to transfer by pouring. 2. (Med.) To transfer, as blood, from the veins or arteries of one man or animal to those of another.