n. the open space somewhat forward of the central point of a snowshoe, necessary for the tipping action of the snowshoer's foot when walking or running.
1860  (1956)  In many parts they only take a long board, which they cut in the shape of a fish, but, of course, the "eye" of the shoe [snowshoe] must be made in this.
1860  (1956)  They [Ojibwa] call this hole "oshkinjig," or the "eye of the snowshoe."