Dictionary

crux

noun \ˈkrəks, ˈkru̇ks\

plural crux·es also cru·ces \ˈkrü-ˌsēz\

Definition of CRUX

: a puzzling or difficult problem : an unsolved question

: an essential point requiring resolution or resolving an outcome

: a main or central feature (as of an argument)

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Latin cruc-, crux cross, torture

First Known Use: 1718

Synonyms: bottom line, bull's-eye, centerpiece, core, essence, gist, heart, kernel, keynote, meat, meat and potatoes, net, nub, nubbin, nucleus, pith, pivot, point, root, sum, sum and substance, the long and short (or the long and the short)

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