Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

Comprehensive
Dictionary Suite
Help
Help
Help
 
   
Display options
Show syllables
Show Lookup History
Double-Click Lookup
  Show Spanish support
  Show Word Combinations
 
Pronunciation
Wordsmyth
  Phonics
  IPA
 
Entry formats
Standard
  Classic
 
Lookup History
jackknife

jack·knife

jackknife

 
pronunciation:
jaek naIf
part of speech: noun
inflections: jackknives
definition 1: a large pocketknife whose blade can be folded into the handle.
 
definition 2: a headfirst dive in which one bends at the waist in midair, touches one's feet, and then straightens out before reaching the water.