מַצְפּוּן

 

 
When Modern Hebrew created a word for the physical object called a compass – מַצְפֵּן listen and repeat, of the root צ.פ.נ (ts.p.n) meaning north as well as hidden – it employed the same root to create a term for the non-physical entity that guides people towards their destiny.
 
The Hebrew word for conscience is מַצְפּוּן listen and repeat.
 
For example:
 
לִפְעָמִים יֵשׁ לִי נְקִיפוֹת מַצְפּוּן.
Sometimes I have pangs of conscience.