nTres-tineThe third tine above the base of a stag's antler; the royal antler.
Century Dictionary and Cyclopedia
ntres-tineThe third tine from the base in such an antler as that of the red deer and wapiti. It lies just below the terminal tine, or tine royal, and may be known by its position in the many species in which the second, or big tine, is lacking. Known also as tine royal and trez tine. Lydekker.
Webster's Revised Unabridged Dictionary
Cf. L. tris, tres, three, and E. tyne, tine, a prong
On the right horn underneath the tres-tine is an abnormal snag 9 inches long.
"Natural History of the Mammalia of India and Ceylon" by Robert A. Sterndale