Webster’s Revised Unabridged Dictionary · 1913
Procyon
Pro′cy·on (prō′sĭ·ŏn), n. [L., a constellation which rises before the Dog Star, Gr. Προκύων; πρό before + κύων a dog. ]
1. (Astron.) A star of the first magnitude in the constellation Canis Minor, or the Little Dog.
2. (Zoöl.) A genus of mammals including the raccoon.