—bolt /bəʊlt/ aep /boʊlt/
noun [C] (LIGHTNING)
► F0 a flash of lightning that looks like a white line against the sky: » The house next to ours was struck by a bolt of lightning.→ SEE ALSO THUNDERBOLT(Cf. ↑thunderbolt) (THUNDER)Thesaurus+: ↑Stormy weather , ↑Wind and windsnoun [C] (LOCK)
► F0 a metal bar on a door or window that slides across to lock it closed: » I closed the window and drew the bolt (= slid the bolt across).See picture: metal bolt on a lock 
Thesaurus+: ↑Locks and locksmithing
noun [C] (QUICK MOVEMENT)
make a bolt for somewhere► F0 to try to escape by running towards something: » The thief tried to make a bolt for the exit.Thesaurus+: ↑Moving quicklyThesaurus+: ↑Running away and escapingnoun [C] (ROLL)
► F0 a length or roll of cloth or wallpaperThesaurus+: ↑General words for textilesnoun [C] (SCREW)
► F0 a screw-like metal object without a point, used with a nut to fasten things togetherSee picture: bolt Thesaurus+: ↑Nuts, bolts and screws
noun [C] (WEAPON)
► F0 a type of short arrow shot from a crossbow (= a type of weapon)See picture: bolt from a crossbow Thesaurus+: ↑Target sports
verb [I or T] (LOCK) ↑Verb Endings for bolt
► F0 to lock a door or window by sliding a bolt across: » Have you locked and bolted the door?» The door bolts on the inside.Thesaurus+: ↑Locking and boltingverb [I] (MOVE QUICKLY) ↑Verb Endings for bolt
► F0 to move very fast, especially as a result of being frightened: » Frightened by the car horn, the horse bolted.Thesaurus+: ↑Moving quicklyverb [T usually + adv/prep] (SCREW) ↑Verb Endings for bolt
► F0 to fasten something in position with a bolt: » On a ship the furniture is often bolted to the deck.Thesaurus+: ↑Fastening and tyingverb [T] (ALSO bolt down) (EAT) ↑Verb Endings for bolt
► F0 to eat food very quickly: » Don't bolt your food like that - you'll get indigestion.Thesaurus+: ↑Eating , ↑Biting, chewing and swallowing