Webster's Revised Unabridged Dictionary · 1913

Conscious

Conscious , adjective

[Latin conscius; con- + scire to know. See Conscience.]

1.
Possessing the faculty of knowing one's own thoughts or mental operations.
Some are thinking or conscious beings, or have a power of thought. — I. Watts
2.
Possessing knowledge, whether by internal, conscious experience or by external observation; cognizant; aware; sensible.
Her conscious heart imputed suspicion where none could have been felt. — Hawthorne
The man who breathes most healthilly is least conscious of his own breathing. — De Quincey
3.
Made the object of consciousness; known to one's self; as, conscious guilt.
With conscious terrors vex me round. — Milton