From The Collaborative International Dictionary of English v.0.48:
Snaky \Snak"y\, a. 1. Of or pertaining to a snake or snakes; resembling a snake; serpentine; winding. [1913 Webster]
The red light playing upon its gilt and carving gave it an appearance of snaky life. --L. Wallace. [1913 Webster]
2. Sly; cunning; insinuating; deceitful. [1913 Webster]
So to the coast of Jordan he directs His easy steps, girded with snaky wiles. --Milton. [1913 Webster]
3. Covered with serpents; having serpents; as, a snaky rod or wand. --Dryden. [1913 Webster]
That snaky-headed, Gorgon shield. --Milton. [1913 Webster]