bolt (v.) Copy link Outline I. To fasten by a bolt, etc.1. obsĕro, 12. occlūdo, si, sum, 3II. To sift flourIII. To gulp down • bolt (v.): I. To fasten by a bolt, etc. 1. obsĕro, 1: to b. a door, ostium ob., Ter.; fores, Suet. 2. occlūdo, si, sum, 3: double b. the doors if you please, occlude, sis, fores ambobus pessulis, Pl.: v. to bar, lock. II. To sift flour: v. to sift. III. To gulp down: q. v.: obsorbeo: Hor.