| 单词 | jackknife |
| 释义 | jackknife (once / 24471 pages) 1n 2nv A knife with a blade that folds closed is called a jackknife. Most jackknives are compact enough to fit in a pocket, but we don't suggest your taking one to school. Another name for a jackknife is a pocketknife. Some jackknives have several different blades, all of which fold tidily (and safely) into the body of the knife, while others unfold to reveal a single blade. The bend of a jackknife inspired the name of the dive also called the jackknife, in which the diver's body folds into a V shape and then straightens out before the diver hits the water. WORD FAMILYjackknife: jackknifed, jackknifes, jackknifing, jackknives USAGE EXAMPLESAuthorities in Essex County say it began when a tractor-trailer jackknifed on Route 22 eastbound near Frelinghuysen Avenue at about 6:45 a.m. Washington Times(Dec 27, 2016) On the southbound 101, three lanes were blocked after a big rig jackknifed about 5:15 a.m. near Lankershim Boulevard. Los Angeles Times(Dec 22, 2016) And another jackknifed big rig was blocking the carpool and two left lanes of the westbound 60 at Reservoir Street. Los Angeles Times(Dec 16, 2016) 1 n a large knife with one or more folding blades 2Syn|Hyper clasp knife pocket knife, pocketknife a knife with a blade that folds into the handle; suitable for carrying in the pocket 1n a dive in which the diver bends to touch the ankles before straightening out Hyper dive, diving a headlong plunge into water 2v dive into the water bending the body at the waist at a right angle, like a jackknife Hyper dive plunge into water |
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