noun

1. BOLT, a sudden abandonment (as from a political party)
2. BOLT, the act of moving with great haste
3. BOLT, a screw that screws into a nut to form a fastener
4. BOLT, the part of a lock that is engaged or withdrawn with a key
5. BOLT, a sliding bar in a breech-loading firearm that ejects an empty cartridge and replaces it and closes the breech
6. BOLT, a roll of cloth or wallpaper of a definite length
7. BOLT, a discharge of lightning accompanied by thunder
8. BOLT, with the back in a very straight position

verb

1. BOLT, make or roll into bolts
2. BOLT, eat hastily without proper chewing
3. BOLT, swallow hastily
4. BOLT, secure or lock with a bolt
5. BOLT, move or jump suddenly
6. BOLT, leave suddenly and as if in a hurry
7. BOLT, run away; usually includes taking something or somebody along

adverb

1. BOLT, in a rigid manner
2. BOLT, directly

1. She sat bolt upright, staring straight ahead.