jackknives
Pike dives, bent
Jackknives is the plural of jackknife—a folding pocketknife with one or more blades that pivot into the handle.
The word extends to movements resembling a closing knife: a jackknife dive brings the body into a tight V before straightening, and a truck jackknifes when the trailer swings toward the cab at a sharp angle.
The semi jackknifed on the icy highway.
Spring-released folding knife
- multitoolCompact combination implement
- lockbladeKnife with securing mechanism
- compactTightly packed together
- collapsibleAble to compress compactly
portable · retractable · folding · blade · handle · pivot · spring-loaded · one-handed
Promotional film excerpt
- skidUncontrolled lateral slide
- truckHeavy freight vehicle
- tractor-trailerCab-and-trailer cargo vehicle
- semiLarge freight truck
rig · articulated · brake · slide · accident · highway · icy · fishtail
Long battlefield spear
- tuckFold into concealment
- somersaultFull-body forward rotation
- springboardFlexible platform for jumping
- platformRaised flat structure
entry · twist · synchronized · aerial · flip · acrobatics · plunge · swan-dive
Abdominal flexion exercises
- sit-upsAbdominal strengthening movements
- v-upsAb exercise, body forms letter
- coreCentral essential portion
- abdominalsTorso's front muscles
bodyweight · pike · fold · repetitions · fitness · mat · plank · obliques
switchblade
Spring-released folding knife
- multitoolCompact combination implement
- lockbladeKnife with securing mechanism
- compactTightly packed together
collapsible · portable · retractable · folding · blade · handle · pivot · spring-loaded · one-handed · EDC
trailer
Promotional film excerpt
- skidUncontrolled lateral slide
- truckHeavy freight vehicle
- tractor-trailerCab-and-trailer cargo vehicle
semi · rig · articulated · brake · slide · accident · highway · icy · fishtail · collision
pike
Long battlefield spear
- tuckFold into concealment
- somersaultFull-body forward rotation
- springboardFlexible platform for jumping
platform · entry · twist · synchronized · aerial · flip · acrobatics · plunge · swan-dive · inward
crunches
Abdominal flexion exercises
- sit-upsAbdominal strengthening movements
- v-upsAb exercise, body forms letter
- coreCentral essential portion
abdominals · bodyweight · pike · fold · repetitions · fitness · mat · plank · obliques · strength
jackkniveshunting knives
Blades for field dressing
machetes · daggers · butcher knives · bayonets · kitchen knives
knives, penknife, pocketknife, knifelike, knifer, knife-edge, jackknifed, jackknifes, jackknifing