眼鏡蛇

Eye; a look or glance; a hole or opening; classifier for wells; a key point or salient feature; a vacant spot in Go.

A reflective surface for seeing one's image; a lens for eyeglasses or optical instruments; something to be reflected upon; to reflect or examine.

Snake; serpent; reptile with a long, limbless body; used in the idiom 委蛇 (wei1 yi2) meaning to act obsequiously.