See Also: bolt 3, adverb(dictionary)
bolt(4)(dictionary)
bolt(encyclopedia)
bolt(6)(dictionary)
bolt(5)(dictionary)
bolt(3)(dictionary)
bolt(2)(dictionary)
bolt(1)(dictionary)
bolt-on(dictionary)
Bolt(finance)

bolt 3, adverb (oh)



3 adv
sit/stand bolt upright
to sit or stand with your back very straight, often because something has frightened you
::She sat bolt upright in the back seat during the whole journey.