Tres"-tyne` (?), n. [L. tris, tres, three + E. tyne.] Zool.
In the antler of a stag, the third tyne above the base. This tyne appears in the third year. In those deer in which the brow tyne does not divide, the tres-tyne is the second tyne above the base. See Illust. under Rucervine, and under Rusine.
© Webster 1913.