← DefinitionshareGuessboltadverbIn a stiff, upright, or rigid position, often used in the phrase 'bolt upright'.verbTo run away or escape suddenly and quickly.nounA metal fastener with a threaded shaft and a head, used with a nut to hold things together.SynonymssecureverbgulpverbfleeverbfastenernoundashnounAntonymsstayverbloosenverb