crux / krəks; kroŏks/ •
n. (pl. crux·es or cru·ces / ˈkroōˌsēz/ ) (the crux) the decisive or most important point at issue: the crux of the matter is that attitudes have changed. ∎ a particular point of difficulty.
Crux / krəks; kroŏks/ Astron. another term for the Southern Cross. ∎ [as genitive] (Cru·cis / ˈkroōsis/ ) used with a preceding letter or numeral to designate a star in this constellation: the star Beta Crucis.
a cross (from Latin); the term is recorded from the mid 17th century, chiefly in crux ansata
(‘cross with a handle’), a word for ankh
. From the early 18th century, the figurative use of the decisive or most important point at issue is recorded.
crux pl. cruxes, cruces
†conundrum, riddle XVIII; difficulty the solution of which perplexes XIX. — L., ‘CROSS 1’
; short for crux interpretum
, crux philosophorum
torment of interpreters, of philosophers.