What is the meaning of Trey?

A playing card or die with the rank of three.

A score of three in cards, dice, or dominoes.

A three-pointer.

A three penny coin; a thrippence.

The third bearer of the same personal name in a family, often denoted by suffixed Roman numeral III.

The third branch of a deer's antler.

affliction, suffering, pain

vexation, grievance

A tray; a board with a low rim.

A unit of measure of approximately 12 bushels.

Trey; the number three on dice.

Source: wiktionary.org