blast (v.) Copy link Outline I. To cause to witherII. To ruin, cause to fail • blast (v.): I. To cause to wither: v. to blight. Phr.: b.'d with lightning, de coelo tactus, Liv.; e coelo ictus, Cic. II. To ruin, cause to fail: v. to overthrow, frustrate, etc. Phr.: to b. one's hope, spem frustrari, Suet. (or perh. spem extinguere: v. to extinguish): to b. a design, consilium turbare, Tac.: to b. a person's reputation in a libellous poem, aliquem probroso carmine diffamare, Tac.