[1] : The Collaborative International Dictionary of English v.0.48

crux \crux\ kru^ks, n.; pl. e. cruxes -e^z, l.
   cruces krudd"s=ez. l., cross, torture, trouble.
   anything that is very puzzling or difficult to explain. --dr.
   sheridan.
   1913 webster

         the perpetual crux of new testament chronologists.
                                                  --strauss.
   1913 webster
see also:
cruxes cruces 

[2] : WordNet (r) 2.0

cruces
     see crux
see also:
crux 

Cruces >> C Words
Cruces, definition of term: Cruces
cruces_pag1.html

Las Cruces >> L Words
Las Cruces, definition of term: Las Cruces
las+cruces_pag1.html