‖n.; pl. E. Cruxes L. Cruces [ 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 ]
[きゅうじょ, kyuujo](n) (1) vitals; tender spot; (2) key (of a problem); crux; essential point; secret; (3) (col) (See 金的) male crotch (as a target in fighting); (P)[Add to Longdo]
[おもいあたる, omoiataru](v5r, vi) to suddenly understand (esp. on basis of experience or memory); to come to mind; to recall (in a flash); to be reminded of; to call to mind; to think of; to strike on; to hit on an answer; to seize the crux of a problem; (P)[Add to Longdo]