jackknife — English Dictionary

Noun

1. A resampling method that applies estimators to all subsamples that each omit a single different group (possibly of a single datapoint) of the original sample to provide a sample distribution of the estimate.

   Synonyms

   leave-one-out

Noun

1. a large knife with one or more folding blades

   Synonyms

   clasp knife

   Broader terms

   pocketknifepocket knife

2. a dive in which the diver bends to touch the ankles before straightening out

   Broader terms

   divediving

Verb

1. dive into the water bending the body at the waist at a right angle, like a jackknife

   Broader terms

   dive