| 释义 |
bolt upright
bolt 1 B0376700 (bōlt)n.1. A bar made of wood or metal that slides into a socket and is used to fasten doors and gates.2. A metal bar or rod in the mechanism of a lock that is thrown or withdrawn by turning the key.3. A fastener consisting of a threaded pin or rod with a head at one end, designed to be inserted through holes in assembled parts and secured by a mated nut that is tightened by applying torque.4. a. A sliding metal bar that positions the cartridge in breechloading rifles, closes the breech, and ejects the spent cartridge.b. A similar device in any breech mechanism.5. A short, heavy arrow with a thick head, used especially with a crossbow.6. A flash of lightning; a thunderbolt.7. A sudden or unexpected event: The announcement was a veritable bolt.8. A sudden movement toward or away.9. A large roll of cloth of a definite length, especially as it comes from the loom.v. bolt·ed, bolt·ing, bolts v.tr.1. To secure or lock with or as if with a bolt.2. To arrange or roll (lengths of cloth, for example) on or in a bolt.3. To eat (food) hurriedly and with little chewing; gulp.4. To desert or withdraw support from (a political party).5. To utter impulsively; blurt.6. Archaic To shoot or discharge (a missile, such as an arrow).v.intr.1. To move or spring suddenly.2. To start suddenly and run away: The horse bolted at the sound of the shot. The frightened child bolted from the room.3. To break away from an affiliation, as from a political party.4. Botany To flower or produce seeds prematurely or develop a flowering stem from a rosette.Idioms: bolt from the blue A sudden, shocking surprise or turn of events. bolt upright In a rigidly vertical position: sat bolt upright.
[Middle English, from Old English, heavy arrow.]
bolt 2 B0376700 (bōlt)tr.v. bolt·ed, bolt·ing, bolts To pass (flour, for example) through a sieve.
[Middle English bulten, from Old French buleter, from Middle High German biuteln, from biutel, bag, purse.]Translationsbolt upright
bolt upright1. verb To suddenly sit or stand up from a reclining position. I bolted upright in bed when the phone rang in the middle of the night.2. adjective Very erect in posture. The teacher instructed us to be bolt upright on the stage during the assembly.See also: bolt, uprightbolt uprightPrecisely perpendicular, erect in carriage, as in She sat bolt upright in her pew. This expression was used in slightly different form by Chaucer in the late 1300s: "She was ... long as a mast and upright as a bolt" ( The Miller's Tale). See also: bolt, uprightbolt ˈupright with your back very straight in an upright position: The noise woke her suddenly and she sat bolt upright in bed.See also: bolt, upright bolt upright In a rigidly vertical position: sat bolt upright.See also: bolt, uprightEncyclopediaSeeboltFinancialSeeBolt |