We have no meanings for "invisible monitor" in our records yet.
1 This invisible monitor was an ever present help in trouble.
2 One of the boys tapped a lot of keys and bent toward the invisible monitor .
3 A shudder, as of extreme cold, ran through Theos's veins, and as if impelled on by some invisible monitor he said almost mournfully:
4 But no human being, however abnormal or however "criminal," is born into the world without this invisible monitor we call "conscience."
5 My invisible monitors sent me out into the street several times, to find people who could not be found.
Grammar, pronunciation and more
This collocation consists of: